11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds 31da177e4SLinus Torvalds he.c 41da177e4SLinus Torvalds 51da177e4SLinus Torvalds ForeRunnerHE ATM Adapter driver for ATM on Linux 61da177e4SLinus Torvalds Copyright (C) 1999-2001 Naval Research Laboratory 71da177e4SLinus Torvalds 81da177e4SLinus Torvalds This library is free software; you can redistribute it and/or 91da177e4SLinus Torvalds modify it under the terms of the GNU Lesser General Public 101da177e4SLinus Torvalds License as published by the Free Software Foundation; either 111da177e4SLinus Torvalds version 2.1 of the License, or (at your option) any later version. 121da177e4SLinus Torvalds 131da177e4SLinus Torvalds This library is distributed in the hope that it will be useful, 141da177e4SLinus Torvalds but WITHOUT ANY WARRANTY; without even the implied warranty of 151da177e4SLinus Torvalds MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 161da177e4SLinus Torvalds Lesser General Public License for more details. 171da177e4SLinus Torvalds 181da177e4SLinus Torvalds You should have received a copy of the GNU Lesser General Public 191da177e4SLinus Torvalds License along with this library; if not, write to the Free Software 201da177e4SLinus Torvalds Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 211da177e4SLinus Torvalds 221da177e4SLinus Torvalds */ 231da177e4SLinus Torvalds 241da177e4SLinus Torvalds /* 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds he.c 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds ForeRunnerHE ATM Adapter driver for ATM on Linux 291da177e4SLinus Torvalds Copyright (C) 1999-2001 Naval Research Laboratory 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds Permission to use, copy, modify and distribute this software and its 321da177e4SLinus Torvalds documentation is hereby granted, provided that both the copyright 331da177e4SLinus Torvalds notice and this permission notice appear in all copies of the software, 341da177e4SLinus Torvalds derivative works or modified versions, and any portions thereof, and 351da177e4SLinus Torvalds that both notices appear in supporting documentation. 361da177e4SLinus Torvalds 371da177e4SLinus Torvalds NRL ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION AND 381da177e4SLinus Torvalds DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER 391da177e4SLinus Torvalds RESULTING FROM THE USE OF THIS SOFTWARE. 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds This driver was written using the "Programmer's Reference Manual for 421da177e4SLinus Torvalds ForeRunnerHE(tm)", MANU0361-01 - Rev. A, 08/21/98. 431da177e4SLinus Torvalds 441da177e4SLinus Torvalds AUTHORS: 451da177e4SLinus Torvalds chas williams <chas@cmf.nrl.navy.mil> 461da177e4SLinus Torvalds eric kinzie <ekinzie@cmf.nrl.navy.mil> 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds NOTES: 491da177e4SLinus Torvalds 4096 supported 'connections' 501da177e4SLinus Torvalds group 0 is used for all traffic 511da177e4SLinus Torvalds interrupt queue 0 is used for all interrupts 521da177e4SLinus Torvalds aal0 support (based on work from ulrich.u.muller@nokia.com) 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds */ 551da177e4SLinus Torvalds 561da177e4SLinus Torvalds #include <linux/module.h> 571da177e4SLinus Torvalds #include <linux/kernel.h> 581da177e4SLinus Torvalds #include <linux/skbuff.h> 591da177e4SLinus Torvalds #include <linux/pci.h> 601da177e4SLinus Torvalds #include <linux/errno.h> 611da177e4SLinus Torvalds #include <linux/types.h> 621da177e4SLinus Torvalds #include <linux/string.h> 631da177e4SLinus Torvalds #include <linux/delay.h> 641da177e4SLinus Torvalds #include <linux/init.h> 651da177e4SLinus Torvalds #include <linux/mm.h> 661da177e4SLinus Torvalds #include <linux/sched.h> 671da177e4SLinus Torvalds #include <linux/timer.h> 681da177e4SLinus Torvalds #include <linux/interrupt.h> 69e5695f08Schas williams #include <linux/dma-mapping.h> 701da177e4SLinus Torvalds #include <asm/io.h> 711da177e4SLinus Torvalds #include <asm/byteorder.h> 721da177e4SLinus Torvalds #include <asm/uaccess.h> 731da177e4SLinus Torvalds 741da177e4SLinus Torvalds #include <linux/atmdev.h> 751da177e4SLinus Torvalds #include <linux/atm.h> 761da177e4SLinus Torvalds #include <linux/sonet.h> 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds #undef USE_SCATTERGATHER 791da177e4SLinus Torvalds #undef USE_CHECKSUM_HW /* still confused about this */ 801da177e4SLinus Torvalds /* #undef HE_DEBUG */ 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds #include "he.h" 831da177e4SLinus Torvalds #include "suni.h" 841da177e4SLinus Torvalds #include <linux/atm_he.h> 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds #define hprintk(fmt,args...) printk(KERN_ERR DEV_LABEL "%d: " fmt, he_dev->number , ##args) 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds #ifdef HE_DEBUG 891da177e4SLinus Torvalds #define HPRINTK(fmt,args...) printk(KERN_DEBUG DEV_LABEL "%d: " fmt, he_dev->number , ##args) 901da177e4SLinus Torvalds #else /* !HE_DEBUG */ 911da177e4SLinus Torvalds #define HPRINTK(fmt,args...) do { } while (0) 921da177e4SLinus Torvalds #endif /* HE_DEBUG */ 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds /* declarations */ 951da177e4SLinus Torvalds 961da177e4SLinus Torvalds static int he_open(struct atm_vcc *vcc); 971da177e4SLinus Torvalds static void he_close(struct atm_vcc *vcc); 981da177e4SLinus Torvalds static int he_send(struct atm_vcc *vcc, struct sk_buff *skb); 991da177e4SLinus Torvalds static int he_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg); 1007d12e780SDavid Howells static irqreturn_t he_irq_handler(int irq, void *dev_id); 1011da177e4SLinus Torvalds static void he_tasklet(unsigned long data); 1021da177e4SLinus Torvalds static int he_proc_read(struct atm_dev *dev,loff_t *pos,char *page); 1031da177e4SLinus Torvalds static int he_start(struct atm_dev *dev); 1041da177e4SLinus Torvalds static void he_stop(struct he_dev *dev); 1051da177e4SLinus Torvalds static void he_phy_put(struct atm_dev *, unsigned char, unsigned long); 1061da177e4SLinus Torvalds static unsigned char he_phy_get(struct atm_dev *, unsigned long); 1071da177e4SLinus Torvalds 1081da177e4SLinus Torvalds static u8 read_prom_byte(struct he_dev *he_dev, int addr); 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvalds /* globals */ 1111da177e4SLinus Torvalds 1121da177e4SLinus Torvalds static struct he_dev *he_devs; 1131da177e4SLinus Torvalds static int disable64; 1141da177e4SLinus Torvalds static short nvpibits = -1; 1151da177e4SLinus Torvalds static short nvcibits = -1; 1161da177e4SLinus Torvalds static short rx_skb_reserve = 16; 1171da177e4SLinus Torvalds static int irq_coalesce = 1; 1181da177e4SLinus Torvalds static int sdh = 0; 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds /* Read from EEPROM = 0000 0011b */ 1211da177e4SLinus Torvalds static unsigned int readtab[] = { 1221da177e4SLinus Torvalds CS_HIGH | CLK_HIGH, 1231da177e4SLinus Torvalds CS_LOW | CLK_LOW, 1241da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1251da177e4SLinus Torvalds CLK_LOW, 1261da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1271da177e4SLinus Torvalds CLK_LOW, 1281da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1291da177e4SLinus Torvalds CLK_LOW, 1301da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1311da177e4SLinus Torvalds CLK_LOW, 1321da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1331da177e4SLinus Torvalds CLK_LOW, 1341da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1351da177e4SLinus Torvalds CLK_LOW | SI_HIGH, 1361da177e4SLinus Torvalds CLK_HIGH | SI_HIGH, /* 1 */ 1371da177e4SLinus Torvalds CLK_LOW | SI_HIGH, 1381da177e4SLinus Torvalds CLK_HIGH | SI_HIGH /* 1 */ 1391da177e4SLinus Torvalds }; 1401da177e4SLinus Torvalds 1411da177e4SLinus Torvalds /* Clock to read from/write to the EEPROM */ 1421da177e4SLinus Torvalds static unsigned int clocktab[] = { 1431da177e4SLinus Torvalds CLK_LOW, 1441da177e4SLinus Torvalds CLK_HIGH, 1451da177e4SLinus Torvalds CLK_LOW, 1461da177e4SLinus Torvalds CLK_HIGH, 1471da177e4SLinus Torvalds CLK_LOW, 1481da177e4SLinus Torvalds CLK_HIGH, 1491da177e4SLinus Torvalds CLK_LOW, 1501da177e4SLinus Torvalds CLK_HIGH, 1511da177e4SLinus Torvalds CLK_LOW, 1521da177e4SLinus Torvalds CLK_HIGH, 1531da177e4SLinus Torvalds CLK_LOW, 1541da177e4SLinus Torvalds CLK_HIGH, 1551da177e4SLinus Torvalds CLK_LOW, 1561da177e4SLinus Torvalds CLK_HIGH, 1571da177e4SLinus Torvalds CLK_LOW, 1581da177e4SLinus Torvalds CLK_HIGH, 1591da177e4SLinus Torvalds CLK_LOW 1601da177e4SLinus Torvalds }; 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds static struct atmdev_ops he_ops = 1631da177e4SLinus Torvalds { 1641da177e4SLinus Torvalds .open = he_open, 1651da177e4SLinus Torvalds .close = he_close, 1661da177e4SLinus Torvalds .ioctl = he_ioctl, 1671da177e4SLinus Torvalds .send = he_send, 1681da177e4SLinus Torvalds .phy_put = he_phy_put, 1691da177e4SLinus Torvalds .phy_get = he_phy_get, 1701da177e4SLinus Torvalds .proc_read = he_proc_read, 1711da177e4SLinus Torvalds .owner = THIS_MODULE 1721da177e4SLinus Torvalds }; 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds #define he_writel(dev, val, reg) do { writel(val, (dev)->membase + (reg)); wmb(); } while (0) 1751da177e4SLinus Torvalds #define he_readl(dev, reg) readl((dev)->membase + (reg)) 1761da177e4SLinus Torvalds 1771da177e4SLinus Torvalds /* section 2.12 connection memory access */ 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds static __inline__ void 1801da177e4SLinus Torvalds he_writel_internal(struct he_dev *he_dev, unsigned val, unsigned addr, 1811da177e4SLinus Torvalds unsigned flags) 1821da177e4SLinus Torvalds { 1831da177e4SLinus Torvalds he_writel(he_dev, val, CON_DAT); 1841da177e4SLinus Torvalds (void) he_readl(he_dev, CON_DAT); /* flush posted writes */ 1851da177e4SLinus Torvalds he_writel(he_dev, flags | CON_CTL_WRITE | CON_CTL_ADDR(addr), CON_CTL); 1861da177e4SLinus Torvalds while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY); 1871da177e4SLinus Torvalds } 1881da177e4SLinus Torvalds 1891da177e4SLinus Torvalds #define he_writel_rcm(dev, val, reg) \ 1901da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_RCM) 1911da177e4SLinus Torvalds 1921da177e4SLinus Torvalds #define he_writel_tcm(dev, val, reg) \ 1931da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_TCM) 1941da177e4SLinus Torvalds 1951da177e4SLinus Torvalds #define he_writel_mbox(dev, val, reg) \ 1961da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_MBOX) 1971da177e4SLinus Torvalds 1981da177e4SLinus Torvalds static unsigned 1991da177e4SLinus Torvalds he_readl_internal(struct he_dev *he_dev, unsigned addr, unsigned flags) 2001da177e4SLinus Torvalds { 2011da177e4SLinus Torvalds he_writel(he_dev, flags | CON_CTL_READ | CON_CTL_ADDR(addr), CON_CTL); 2021da177e4SLinus Torvalds while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY); 2031da177e4SLinus Torvalds return he_readl(he_dev, CON_DAT); 2041da177e4SLinus Torvalds } 2051da177e4SLinus Torvalds 2061da177e4SLinus Torvalds #define he_readl_rcm(dev, reg) \ 2071da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_RCM) 2081da177e4SLinus Torvalds 2091da177e4SLinus Torvalds #define he_readl_tcm(dev, reg) \ 2101da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_TCM) 2111da177e4SLinus Torvalds 2121da177e4SLinus Torvalds #define he_readl_mbox(dev, reg) \ 2131da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_MBOX) 2141da177e4SLinus Torvalds 2151da177e4SLinus Torvalds 2161da177e4SLinus Torvalds /* figure 2.2 connection id */ 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds #define he_mkcid(dev, vpi, vci) (((vpi << (dev)->vcibits) | vci) & 0x1fff) 2191da177e4SLinus Torvalds 2201da177e4SLinus Torvalds /* 2.5.1 per connection transmit state registers */ 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds #define he_writel_tsr0(dev, val, cid) \ 2231da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 0) 2241da177e4SLinus Torvalds #define he_readl_tsr0(dev, cid) \ 2251da177e4SLinus Torvalds he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 0) 2261da177e4SLinus Torvalds 2271da177e4SLinus Torvalds #define he_writel_tsr1(dev, val, cid) \ 2281da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 1) 2291da177e4SLinus Torvalds 2301da177e4SLinus Torvalds #define he_writel_tsr2(dev, val, cid) \ 2311da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 2) 2321da177e4SLinus Torvalds 2331da177e4SLinus Torvalds #define he_writel_tsr3(dev, val, cid) \ 2341da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 3) 2351da177e4SLinus Torvalds 2361da177e4SLinus Torvalds #define he_writel_tsr4(dev, val, cid) \ 2371da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 4) 2381da177e4SLinus Torvalds 2391da177e4SLinus Torvalds /* from page 2-20 2401da177e4SLinus Torvalds * 2411da177e4SLinus Torvalds * NOTE While the transmit connection is active, bits 23 through 0 2421da177e4SLinus Torvalds * of this register must not be written by the host. Byte 2431da177e4SLinus Torvalds * enables should be used during normal operation when writing 2441da177e4SLinus Torvalds * the most significant byte. 2451da177e4SLinus Torvalds */ 2461da177e4SLinus Torvalds 2471da177e4SLinus Torvalds #define he_writel_tsr4_upper(dev, val, cid) \ 2481da177e4SLinus Torvalds he_writel_internal(dev, val, CONFIG_TSRA | (cid << 3) | 4, \ 2491da177e4SLinus Torvalds CON_CTL_TCM \ 2501da177e4SLinus Torvalds | CON_BYTE_DISABLE_2 \ 2511da177e4SLinus Torvalds | CON_BYTE_DISABLE_1 \ 2521da177e4SLinus Torvalds | CON_BYTE_DISABLE_0) 2531da177e4SLinus Torvalds 2541da177e4SLinus Torvalds #define he_readl_tsr4(dev, cid) \ 2551da177e4SLinus Torvalds he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 4) 2561da177e4SLinus Torvalds 2571da177e4SLinus Torvalds #define he_writel_tsr5(dev, val, cid) \ 2581da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 5) 2591da177e4SLinus Torvalds 2601da177e4SLinus Torvalds #define he_writel_tsr6(dev, val, cid) \ 2611da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 6) 2621da177e4SLinus Torvalds 2631da177e4SLinus Torvalds #define he_writel_tsr7(dev, val, cid) \ 2641da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 7) 2651da177e4SLinus Torvalds 2661da177e4SLinus Torvalds 2671da177e4SLinus Torvalds #define he_writel_tsr8(dev, val, cid) \ 2681da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 0) 2691da177e4SLinus Torvalds 2701da177e4SLinus Torvalds #define he_writel_tsr9(dev, val, cid) \ 2711da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 1) 2721da177e4SLinus Torvalds 2731da177e4SLinus Torvalds #define he_writel_tsr10(dev, val, cid) \ 2741da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 2) 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds #define he_writel_tsr11(dev, val, cid) \ 2771da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 3) 2781da177e4SLinus Torvalds 2791da177e4SLinus Torvalds 2801da177e4SLinus Torvalds #define he_writel_tsr12(dev, val, cid) \ 2811da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 0) 2821da177e4SLinus Torvalds 2831da177e4SLinus Torvalds #define he_writel_tsr13(dev, val, cid) \ 2841da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 1) 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvalds 2871da177e4SLinus Torvalds #define he_writel_tsr14(dev, val, cid) \ 2881da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRD | cid) 2891da177e4SLinus Torvalds 2901da177e4SLinus Torvalds #define he_writel_tsr14_upper(dev, val, cid) \ 2911da177e4SLinus Torvalds he_writel_internal(dev, val, CONFIG_TSRD | cid, \ 2921da177e4SLinus Torvalds CON_CTL_TCM \ 2931da177e4SLinus Torvalds | CON_BYTE_DISABLE_2 \ 2941da177e4SLinus Torvalds | CON_BYTE_DISABLE_1 \ 2951da177e4SLinus Torvalds | CON_BYTE_DISABLE_0) 2961da177e4SLinus Torvalds 2971da177e4SLinus Torvalds /* 2.7.1 per connection receive state registers */ 2981da177e4SLinus Torvalds 2991da177e4SLinus Torvalds #define he_writel_rsr0(dev, val, cid) \ 3001da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 0) 3011da177e4SLinus Torvalds #define he_readl_rsr0(dev, cid) \ 3021da177e4SLinus Torvalds he_readl_rcm(dev, 0x00000 | (cid << 3) | 0) 3031da177e4SLinus Torvalds 3041da177e4SLinus Torvalds #define he_writel_rsr1(dev, val, cid) \ 3051da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 1) 3061da177e4SLinus Torvalds 3071da177e4SLinus Torvalds #define he_writel_rsr2(dev, val, cid) \ 3081da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 2) 3091da177e4SLinus Torvalds 3101da177e4SLinus Torvalds #define he_writel_rsr3(dev, val, cid) \ 3111da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 3) 3121da177e4SLinus Torvalds 3131da177e4SLinus Torvalds #define he_writel_rsr4(dev, val, cid) \ 3141da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 4) 3151da177e4SLinus Torvalds 3161da177e4SLinus Torvalds #define he_writel_rsr5(dev, val, cid) \ 3171da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 5) 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds #define he_writel_rsr6(dev, val, cid) \ 3201da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 6) 3211da177e4SLinus Torvalds 3221da177e4SLinus Torvalds #define he_writel_rsr7(dev, val, cid) \ 3231da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 7) 3241da177e4SLinus Torvalds 3251da177e4SLinus Torvalds static __inline__ struct atm_vcc* 3261da177e4SLinus Torvalds __find_vcc(struct he_dev *he_dev, unsigned cid) 3271da177e4SLinus Torvalds { 3281da177e4SLinus Torvalds struct hlist_head *head; 3291da177e4SLinus Torvalds struct atm_vcc *vcc; 3301da177e4SLinus Torvalds struct hlist_node *node; 3311da177e4SLinus Torvalds struct sock *s; 3321da177e4SLinus Torvalds short vpi; 3331da177e4SLinus Torvalds int vci; 3341da177e4SLinus Torvalds 3351da177e4SLinus Torvalds vpi = cid >> he_dev->vcibits; 3361da177e4SLinus Torvalds vci = cid & ((1 << he_dev->vcibits) - 1); 3371da177e4SLinus Torvalds head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)]; 3381da177e4SLinus Torvalds 3391da177e4SLinus Torvalds sk_for_each(s, node, head) { 3401da177e4SLinus Torvalds vcc = atm_sk(s); 3411da177e4SLinus Torvalds if (vcc->dev == he_dev->atm_dev && 3421da177e4SLinus Torvalds vcc->vci == vci && vcc->vpi == vpi && 3431da177e4SLinus Torvalds vcc->qos.rxtp.traffic_class != ATM_NONE) { 3441da177e4SLinus Torvalds return vcc; 3451da177e4SLinus Torvalds } 3461da177e4SLinus Torvalds } 3471da177e4SLinus Torvalds return NULL; 3481da177e4SLinus Torvalds } 3491da177e4SLinus Torvalds 3501da177e4SLinus Torvalds static int __devinit 3511da177e4SLinus Torvalds he_init_one(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent) 3521da177e4SLinus Torvalds { 3531da177e4SLinus Torvalds struct atm_dev *atm_dev = NULL; 3541da177e4SLinus Torvalds struct he_dev *he_dev = NULL; 3551da177e4SLinus Torvalds int err = 0; 3561da177e4SLinus Torvalds 357900092a4SAdrian Bunk printk(KERN_INFO "ATM he driver\n"); 3581da177e4SLinus Torvalds 3591da177e4SLinus Torvalds if (pci_enable_device(pci_dev)) 3601da177e4SLinus Torvalds return -EIO; 361284901a9SYang Hongyang if (pci_set_dma_mask(pci_dev, DMA_BIT_MASK(32)) != 0) { 3621da177e4SLinus Torvalds printk(KERN_WARNING "he: no suitable dma available\n"); 3631da177e4SLinus Torvalds err = -EIO; 3641da177e4SLinus Torvalds goto init_one_failure; 3651da177e4SLinus Torvalds } 3661da177e4SLinus Torvalds 3671da177e4SLinus Torvalds atm_dev = atm_dev_register(DEV_LABEL, &he_ops, -1, NULL); 3681da177e4SLinus Torvalds if (!atm_dev) { 3691da177e4SLinus Torvalds err = -ENODEV; 3701da177e4SLinus Torvalds goto init_one_failure; 3711da177e4SLinus Torvalds } 3721da177e4SLinus Torvalds pci_set_drvdata(pci_dev, atm_dev); 3731da177e4SLinus Torvalds 3740c1cca1dSOm Narasimhan he_dev = kzalloc(sizeof(struct he_dev), 3751da177e4SLinus Torvalds GFP_KERNEL); 3761da177e4SLinus Torvalds if (!he_dev) { 3771da177e4SLinus Torvalds err = -ENOMEM; 3781da177e4SLinus Torvalds goto init_one_failure; 3791da177e4SLinus Torvalds } 3801da177e4SLinus Torvalds he_dev->pci_dev = pci_dev; 3811da177e4SLinus Torvalds he_dev->atm_dev = atm_dev; 3821da177e4SLinus Torvalds he_dev->atm_dev->dev_data = he_dev; 3831da177e4SLinus Torvalds atm_dev->dev_data = he_dev; 3841da177e4SLinus Torvalds he_dev->number = atm_dev->number; 3858a8037acSchas williams tasklet_init(&he_dev->tasklet, he_tasklet, (unsigned long) he_dev); 3868a8037acSchas williams spin_lock_init(&he_dev->global_lock); 3878a8037acSchas williams 3881da177e4SLinus Torvalds if (he_start(atm_dev)) { 3891da177e4SLinus Torvalds he_stop(he_dev); 3901da177e4SLinus Torvalds err = -ENODEV; 3911da177e4SLinus Torvalds goto init_one_failure; 3921da177e4SLinus Torvalds } 3931da177e4SLinus Torvalds he_dev->next = NULL; 3941da177e4SLinus Torvalds if (he_devs) 3951da177e4SLinus Torvalds he_dev->next = he_devs; 3961da177e4SLinus Torvalds he_devs = he_dev; 3971da177e4SLinus Torvalds return 0; 3981da177e4SLinus Torvalds 3991da177e4SLinus Torvalds init_one_failure: 4001da177e4SLinus Torvalds if (atm_dev) 4011da177e4SLinus Torvalds atm_dev_deregister(atm_dev); 4021da177e4SLinus Torvalds kfree(he_dev); 4031da177e4SLinus Torvalds pci_disable_device(pci_dev); 4041da177e4SLinus Torvalds return err; 4051da177e4SLinus Torvalds } 4061da177e4SLinus Torvalds 4071da177e4SLinus Torvalds static void __devexit 4081da177e4SLinus Torvalds he_remove_one (struct pci_dev *pci_dev) 4091da177e4SLinus Torvalds { 4101da177e4SLinus Torvalds struct atm_dev *atm_dev; 4111da177e4SLinus Torvalds struct he_dev *he_dev; 4121da177e4SLinus Torvalds 4131da177e4SLinus Torvalds atm_dev = pci_get_drvdata(pci_dev); 4141da177e4SLinus Torvalds he_dev = HE_DEV(atm_dev); 4151da177e4SLinus Torvalds 4161da177e4SLinus Torvalds /* need to remove from he_devs */ 4171da177e4SLinus Torvalds 4181da177e4SLinus Torvalds he_stop(he_dev); 4191da177e4SLinus Torvalds atm_dev_deregister(atm_dev); 4201da177e4SLinus Torvalds kfree(he_dev); 4211da177e4SLinus Torvalds 4221da177e4SLinus Torvalds pci_set_drvdata(pci_dev, NULL); 4231da177e4SLinus Torvalds pci_disable_device(pci_dev); 4241da177e4SLinus Torvalds } 4251da177e4SLinus Torvalds 4261da177e4SLinus Torvalds 4271da177e4SLinus Torvalds static unsigned 4281da177e4SLinus Torvalds rate_to_atmf(unsigned rate) /* cps to atm forum format */ 4291da177e4SLinus Torvalds { 4301da177e4SLinus Torvalds #define NONZERO (1 << 14) 4311da177e4SLinus Torvalds 4321da177e4SLinus Torvalds unsigned exp = 0; 4331da177e4SLinus Torvalds 4341da177e4SLinus Torvalds if (rate == 0) 4351da177e4SLinus Torvalds return 0; 4361da177e4SLinus Torvalds 4371da177e4SLinus Torvalds rate <<= 9; 4381da177e4SLinus Torvalds while (rate > 0x3ff) { 4391da177e4SLinus Torvalds ++exp; 4401da177e4SLinus Torvalds rate >>= 1; 4411da177e4SLinus Torvalds } 4421da177e4SLinus Torvalds 4431da177e4SLinus Torvalds return (NONZERO | (exp << 9) | (rate & 0x1ff)); 4441da177e4SLinus Torvalds } 4451da177e4SLinus Torvalds 4465b7c714eSRoland Dreier static void __devinit 4471da177e4SLinus Torvalds he_init_rx_lbfp0(struct he_dev *he_dev) 4481da177e4SLinus Torvalds { 4491da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 4501da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 4511da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 4521da177e4SLinus Torvalds unsigned row_offset = he_dev->r0_startrow * he_dev->bytes_per_row; 4531da177e4SLinus Torvalds 4541da177e4SLinus Torvalds lbufd_index = 0; 4551da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA); 4561da177e4SLinus Torvalds 4571da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, RLBF0_H); 4581da177e4SLinus Torvalds 4591da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->r0_numbuffs; ++i) { 4601da177e4SLinus Torvalds lbufd_index += 2; 4611da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 4621da177e4SLinus Torvalds 4631da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 4641da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 4651da177e4SLinus Torvalds 4661da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 4671da177e4SLinus Torvalds lbuf_count = 0; 4681da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 4691da177e4SLinus Torvalds } 4701da177e4SLinus Torvalds lbm_offset += 4; 4711da177e4SLinus Torvalds } 4721da177e4SLinus Torvalds 4731da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 2, RLBF0_T); 4741da177e4SLinus Torvalds he_writel(he_dev, he_dev->r0_numbuffs, RLBF0_C); 4751da177e4SLinus Torvalds } 4761da177e4SLinus Torvalds 4775b7c714eSRoland Dreier static void __devinit 4781da177e4SLinus Torvalds he_init_rx_lbfp1(struct he_dev *he_dev) 4791da177e4SLinus Torvalds { 4801da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 4811da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 4821da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 4831da177e4SLinus Torvalds unsigned row_offset = he_dev->r1_startrow * he_dev->bytes_per_row; 4841da177e4SLinus Torvalds 4851da177e4SLinus Torvalds lbufd_index = 1; 4861da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index); 4871da177e4SLinus Torvalds 4881da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, RLBF1_H); 4891da177e4SLinus Torvalds 4901da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->r1_numbuffs; ++i) { 4911da177e4SLinus Torvalds lbufd_index += 2; 4921da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 4931da177e4SLinus Torvalds 4941da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 4951da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 4961da177e4SLinus Torvalds 4971da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 4981da177e4SLinus Torvalds lbuf_count = 0; 4991da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 5001da177e4SLinus Torvalds } 5011da177e4SLinus Torvalds lbm_offset += 4; 5021da177e4SLinus Torvalds } 5031da177e4SLinus Torvalds 5041da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 2, RLBF1_T); 5051da177e4SLinus Torvalds he_writel(he_dev, he_dev->r1_numbuffs, RLBF1_C); 5061da177e4SLinus Torvalds } 5071da177e4SLinus Torvalds 5085b7c714eSRoland Dreier static void __devinit 5091da177e4SLinus Torvalds he_init_tx_lbfp(struct he_dev *he_dev) 5101da177e4SLinus Torvalds { 5111da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 5121da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 5131da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 5141da177e4SLinus Torvalds unsigned row_offset = he_dev->tx_startrow * he_dev->bytes_per_row; 5151da177e4SLinus Torvalds 5161da177e4SLinus Torvalds lbufd_index = he_dev->r0_numbuffs + he_dev->r1_numbuffs; 5171da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index); 5181da177e4SLinus Torvalds 5191da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, TLBF_H); 5201da177e4SLinus Torvalds 5211da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->tx_numbuffs; ++i) { 5221da177e4SLinus Torvalds lbufd_index += 1; 5231da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 5241da177e4SLinus Torvalds 5251da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 5261da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 5271da177e4SLinus Torvalds 5281da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 5291da177e4SLinus Torvalds lbuf_count = 0; 5301da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 5311da177e4SLinus Torvalds } 5321da177e4SLinus Torvalds lbm_offset += 2; 5331da177e4SLinus Torvalds } 5341da177e4SLinus Torvalds 5351da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 1, TLBF_T); 5361da177e4SLinus Torvalds } 5371da177e4SLinus Torvalds 5385b7c714eSRoland Dreier static int __devinit 5391da177e4SLinus Torvalds he_init_tpdrq(struct he_dev *he_dev) 5401da177e4SLinus Torvalds { 5411da177e4SLinus Torvalds he_dev->tpdrq_base = pci_alloc_consistent(he_dev->pci_dev, 5421da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq), &he_dev->tpdrq_phys); 5431da177e4SLinus Torvalds if (he_dev->tpdrq_base == NULL) { 5441da177e4SLinus Torvalds hprintk("failed to alloc tpdrq\n"); 5451da177e4SLinus Torvalds return -ENOMEM; 5461da177e4SLinus Torvalds } 5471da177e4SLinus Torvalds memset(he_dev->tpdrq_base, 0, 5481da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq)); 5491da177e4SLinus Torvalds 5501da177e4SLinus Torvalds he_dev->tpdrq_tail = he_dev->tpdrq_base; 5511da177e4SLinus Torvalds he_dev->tpdrq_head = he_dev->tpdrq_base; 5521da177e4SLinus Torvalds 5531da177e4SLinus Torvalds he_writel(he_dev, he_dev->tpdrq_phys, TPDRQ_B_H); 5541da177e4SLinus Torvalds he_writel(he_dev, 0, TPDRQ_T); 5551da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TPDRQ_SIZE - 1, TPDRQ_S); 5561da177e4SLinus Torvalds 5571da177e4SLinus Torvalds return 0; 5581da177e4SLinus Torvalds } 5591da177e4SLinus Torvalds 5605b7c714eSRoland Dreier static void __devinit 5611da177e4SLinus Torvalds he_init_cs_block(struct he_dev *he_dev) 5621da177e4SLinus Torvalds { 5631da177e4SLinus Torvalds unsigned clock, rate, delta; 5641da177e4SLinus Torvalds int reg; 5651da177e4SLinus Torvalds 5661da177e4SLinus Torvalds /* 5.1.7 cs block initialization */ 5671da177e4SLinus Torvalds 5681da177e4SLinus Torvalds for (reg = 0; reg < 0x20; ++reg) 5691da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0, CS_STTIM0 + reg); 5701da177e4SLinus Torvalds 5711da177e4SLinus Torvalds /* rate grid timer reload values */ 5721da177e4SLinus Torvalds 5731da177e4SLinus Torvalds clock = he_is622(he_dev) ? 66667000 : 50000000; 5741da177e4SLinus Torvalds rate = he_dev->atm_dev->link_rate; 5751da177e4SLinus Torvalds delta = rate / 16 / 2; 5761da177e4SLinus Torvalds 5771da177e4SLinus Torvalds for (reg = 0; reg < 0x10; ++reg) { 5781da177e4SLinus Torvalds /* 2.4 internal transmit function 5791da177e4SLinus Torvalds * 5801da177e4SLinus Torvalds * we initialize the first row in the rate grid. 5811da177e4SLinus Torvalds * values are period (in clock cycles) of timer 5821da177e4SLinus Torvalds */ 5831da177e4SLinus Torvalds unsigned period = clock / rate; 5841da177e4SLinus Torvalds 5851da177e4SLinus Torvalds he_writel_mbox(he_dev, period, CS_TGRLD0 + reg); 5861da177e4SLinus Torvalds rate -= delta; 5871da177e4SLinus Torvalds } 5881da177e4SLinus Torvalds 5891da177e4SLinus Torvalds if (he_is622(he_dev)) { 5901da177e4SLinus Torvalds /* table 5.2 (4 cells per lbuf) */ 5911da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000800fa, CS_ERTHR0); 5921da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000c33cb, CS_ERTHR1); 5931da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0010101b, CS_ERTHR2); 5941da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00181dac, CS_ERTHR3); 5951da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00280600, CS_ERTHR4); 5961da177e4SLinus Torvalds 5971da177e4SLinus Torvalds /* table 5.3, 5.4, 5.5, 5.6, 5.7 */ 5981da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x023de8b3, CS_ERCTL0); 5991da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1801, CS_ERCTL1); 6001da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_ERCTL2); 6011da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0); 6021da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_ERSTAT1); 6031da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x14585, CS_RTFWR); 6041da177e4SLinus Torvalds 6051da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4680, CS_RTATR); 6061da177e4SLinus Torvalds 6071da177e4SLinus Torvalds /* table 5.8 */ 6081da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00159ece, CS_TFBSET); 6091da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_WCRMAX); 6101da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5eb3, CS_WCRMIN); 6111da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xe8b3, CS_WCRINC); 6121da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xdeb3, CS_WCRDEC); 6131da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_WCRCEIL); 6141da177e4SLinus Torvalds 6151da177e4SLinus Torvalds /* table 5.9 */ 6161da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5, CS_OTPPER); 6171da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x14, CS_OTWPER); 6181da177e4SLinus Torvalds } else { 6191da177e4SLinus Torvalds /* table 5.1 (4 cells per lbuf) */ 6201da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000400ea, CS_ERTHR0); 6211da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00063388, CS_ERTHR1); 6221da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00081018, CS_ERTHR2); 6231da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000c1dac, CS_ERTHR3); 6241da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0014051a, CS_ERTHR4); 6251da177e4SLinus Torvalds 6261da177e4SLinus Torvalds /* table 5.3, 5.4, 5.5, 5.6, 5.7 */ 6271da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0235e4b1, CS_ERCTL0); 6281da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4701, CS_ERCTL1); 6291da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_ERCTL2); 6301da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0); 6311da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_ERSTAT1); 6321da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xf424, CS_RTFWR); 6331da177e4SLinus Torvalds 6341da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4680, CS_RTATR); 6351da177e4SLinus Torvalds 6361da177e4SLinus Torvalds /* table 5.8 */ 6371da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000563b7, CS_TFBSET); 6381da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_WCRMAX); 6391da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5ab1, CS_WCRMIN); 6401da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xe4b1, CS_WCRINC); 6411da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xdab1, CS_WCRDEC); 6421da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_WCRCEIL); 6431da177e4SLinus Torvalds 6441da177e4SLinus Torvalds /* table 5.9 */ 6451da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x6, CS_OTPPER); 6461da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1e, CS_OTWPER); 6471da177e4SLinus Torvalds } 6481da177e4SLinus Torvalds 6491da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x8, CS_OTTLIM); 6501da177e4SLinus Torvalds 6511da177e4SLinus Torvalds for (reg = 0; reg < 0x8; ++reg) 6521da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0, CS_HGRRT0 + reg); 6531da177e4SLinus Torvalds 6541da177e4SLinus Torvalds } 6551da177e4SLinus Torvalds 6565b7c714eSRoland Dreier static int __devinit 6571da177e4SLinus Torvalds he_init_cs_block_rcm(struct he_dev *he_dev) 6581da177e4SLinus Torvalds { 6591da177e4SLinus Torvalds unsigned (*rategrid)[16][16]; 6601da177e4SLinus Torvalds unsigned rate, delta; 6611da177e4SLinus Torvalds int i, j, reg; 6621da177e4SLinus Torvalds 6631da177e4SLinus Torvalds unsigned rate_atmf, exp, man; 6641da177e4SLinus Torvalds unsigned long long rate_cps; 6651da177e4SLinus Torvalds int mult, buf, buf_limit = 4; 6661da177e4SLinus Torvalds 6671da177e4SLinus Torvalds rategrid = kmalloc( sizeof(unsigned) * 16 * 16, GFP_KERNEL); 6681da177e4SLinus Torvalds if (!rategrid) 6691da177e4SLinus Torvalds return -ENOMEM; 6701da177e4SLinus Torvalds 6711da177e4SLinus Torvalds /* initialize rate grid group table */ 6721da177e4SLinus Torvalds 6731da177e4SLinus Torvalds for (reg = 0x0; reg < 0xff; ++reg) 6741da177e4SLinus Torvalds he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg); 6751da177e4SLinus Torvalds 6761da177e4SLinus Torvalds /* initialize rate controller groups */ 6771da177e4SLinus Torvalds 6781da177e4SLinus Torvalds for (reg = 0x100; reg < 0x1ff; ++reg) 6791da177e4SLinus Torvalds he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg); 6801da177e4SLinus Torvalds 6811da177e4SLinus Torvalds /* initialize tNrm lookup table */ 6821da177e4SLinus Torvalds 6831da177e4SLinus Torvalds /* the manual makes reference to a routine in a sample driver 6841da177e4SLinus Torvalds for proper configuration; fortunately, we only need this 6851da177e4SLinus Torvalds in order to support abr connection */ 6861da177e4SLinus Torvalds 6871da177e4SLinus Torvalds /* initialize rate to group table */ 6881da177e4SLinus Torvalds 6891da177e4SLinus Torvalds rate = he_dev->atm_dev->link_rate; 6901da177e4SLinus Torvalds delta = rate / 32; 6911da177e4SLinus Torvalds 6921da177e4SLinus Torvalds /* 6931da177e4SLinus Torvalds * 2.4 transmit internal functions 6941da177e4SLinus Torvalds * 6951da177e4SLinus Torvalds * we construct a copy of the rate grid used by the scheduler 6961da177e4SLinus Torvalds * in order to construct the rate to group table below 6971da177e4SLinus Torvalds */ 6981da177e4SLinus Torvalds 6991da177e4SLinus Torvalds for (j = 0; j < 16; j++) { 7001da177e4SLinus Torvalds (*rategrid)[0][j] = rate; 7011da177e4SLinus Torvalds rate -= delta; 7021da177e4SLinus Torvalds } 7031da177e4SLinus Torvalds 7041da177e4SLinus Torvalds for (i = 1; i < 16; i++) 7051da177e4SLinus Torvalds for (j = 0; j < 16; j++) 7061da177e4SLinus Torvalds if (i > 14) 7071da177e4SLinus Torvalds (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 4; 7081da177e4SLinus Torvalds else 7091da177e4SLinus Torvalds (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 2; 7101da177e4SLinus Torvalds 7111da177e4SLinus Torvalds /* 7121da177e4SLinus Torvalds * 2.4 transmit internal function 7131da177e4SLinus Torvalds * 7141da177e4SLinus Torvalds * this table maps the upper 5 bits of exponent and mantissa 7151da177e4SLinus Torvalds * of the atm forum representation of the rate into an index 7161da177e4SLinus Torvalds * on rate grid 7171da177e4SLinus Torvalds */ 7181da177e4SLinus Torvalds 7191da177e4SLinus Torvalds rate_atmf = 0; 7201da177e4SLinus Torvalds while (rate_atmf < 0x400) { 7211da177e4SLinus Torvalds man = (rate_atmf & 0x1f) << 4; 7221da177e4SLinus Torvalds exp = rate_atmf >> 5; 7231da177e4SLinus Torvalds 7241da177e4SLinus Torvalds /* 7251da177e4SLinus Torvalds instead of '/ 512', use '>> 9' to prevent a call 7261da177e4SLinus Torvalds to divdu3 on x86 platforms 7271da177e4SLinus Torvalds */ 7281da177e4SLinus Torvalds rate_cps = (unsigned long long) (1 << exp) * (man + 512) >> 9; 7291da177e4SLinus Torvalds 7301da177e4SLinus Torvalds if (rate_cps < 10) 7311da177e4SLinus Torvalds rate_cps = 10; /* 2.2.1 minimum payload rate is 10 cps */ 7321da177e4SLinus Torvalds 7331da177e4SLinus Torvalds for (i = 255; i > 0; i--) 7341da177e4SLinus Torvalds if ((*rategrid)[i/16][i%16] >= rate_cps) 7351da177e4SLinus Torvalds break; /* pick nearest rate instead? */ 7361da177e4SLinus Torvalds 7371da177e4SLinus Torvalds /* 7381da177e4SLinus Torvalds * each table entry is 16 bits: (rate grid index (8 bits) 7391da177e4SLinus Torvalds * and a buffer limit (8 bits) 7401da177e4SLinus Torvalds * there are two table entries in each 32-bit register 7411da177e4SLinus Torvalds */ 7421da177e4SLinus Torvalds 7431da177e4SLinus Torvalds #ifdef notdef 7441da177e4SLinus Torvalds buf = rate_cps * he_dev->tx_numbuffs / 7451da177e4SLinus Torvalds (he_dev->atm_dev->link_rate * 2); 7461da177e4SLinus Torvalds #else 7471da177e4SLinus Torvalds /* this is pretty, but avoids _divdu3 and is mostly correct */ 7481da177e4SLinus Torvalds mult = he_dev->atm_dev->link_rate / ATM_OC3_PCR; 7491da177e4SLinus Torvalds if (rate_cps > (272 * mult)) 7501da177e4SLinus Torvalds buf = 4; 7511da177e4SLinus Torvalds else if (rate_cps > (204 * mult)) 7521da177e4SLinus Torvalds buf = 3; 7531da177e4SLinus Torvalds else if (rate_cps > (136 * mult)) 7541da177e4SLinus Torvalds buf = 2; 7551da177e4SLinus Torvalds else if (rate_cps > (68 * mult)) 7561da177e4SLinus Torvalds buf = 1; 7571da177e4SLinus Torvalds else 7581da177e4SLinus Torvalds buf = 0; 7591da177e4SLinus Torvalds #endif 7601da177e4SLinus Torvalds if (buf > buf_limit) 7611da177e4SLinus Torvalds buf = buf_limit; 7621da177e4SLinus Torvalds reg = (reg << 16) | ((i << 8) | buf); 7631da177e4SLinus Torvalds 7641da177e4SLinus Torvalds #define RTGTBL_OFFSET 0x400 7651da177e4SLinus Torvalds 7661da177e4SLinus Torvalds if (rate_atmf & 0x1) 7671da177e4SLinus Torvalds he_writel_rcm(he_dev, reg, 7681da177e4SLinus Torvalds CONFIG_RCMABR + RTGTBL_OFFSET + (rate_atmf >> 1)); 7691da177e4SLinus Torvalds 7701da177e4SLinus Torvalds ++rate_atmf; 7711da177e4SLinus Torvalds } 7721da177e4SLinus Torvalds 7731da177e4SLinus Torvalds kfree(rategrid); 7741da177e4SLinus Torvalds return 0; 7751da177e4SLinus Torvalds } 7761da177e4SLinus Torvalds 7775b7c714eSRoland Dreier static int __devinit 7781da177e4SLinus Torvalds he_init_group(struct he_dev *he_dev, int group) 7791da177e4SLinus Torvalds { 7801da177e4SLinus Torvalds int i; 7811da177e4SLinus Torvalds 7821da177e4SLinus Torvalds /* small buffer pool */ 7831da177e4SLinus Torvalds he_dev->rbps_pool = pci_pool_create("rbps", he_dev->pci_dev, 7841da177e4SLinus Torvalds CONFIG_RBPS_BUFSIZE, 8, 0); 7851da177e4SLinus Torvalds if (he_dev->rbps_pool == NULL) { 7861da177e4SLinus Torvalds hprintk("unable to create rbps pages\n"); 7871da177e4SLinus Torvalds return -ENOMEM; 7881da177e4SLinus Torvalds } 7891da177e4SLinus Torvalds 7901da177e4SLinus Torvalds he_dev->rbps_base = pci_alloc_consistent(he_dev->pci_dev, 7911da177e4SLinus Torvalds CONFIG_RBPS_SIZE * sizeof(struct he_rbp), &he_dev->rbps_phys); 7921da177e4SLinus Torvalds if (he_dev->rbps_base == NULL) { 7931da177e4SLinus Torvalds hprintk("failed to alloc rbps\n"); 7941da177e4SLinus Torvalds return -ENOMEM; 7951da177e4SLinus Torvalds } 7961da177e4SLinus Torvalds memset(he_dev->rbps_base, 0, CONFIG_RBPS_SIZE * sizeof(struct he_rbp)); 7971da177e4SLinus Torvalds he_dev->rbps_virt = kmalloc(CONFIG_RBPS_SIZE * sizeof(struct he_virt), GFP_KERNEL); 7981da177e4SLinus Torvalds 7991da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPS_SIZE; ++i) { 8001da177e4SLinus Torvalds dma_addr_t dma_handle; 8011da177e4SLinus Torvalds void *cpuaddr; 8021da177e4SLinus Torvalds 803441e143eSChristoph Lameter cpuaddr = pci_pool_alloc(he_dev->rbps_pool, GFP_KERNEL|GFP_DMA, &dma_handle); 8041da177e4SLinus Torvalds if (cpuaddr == NULL) 8051da177e4SLinus Torvalds return -ENOMEM; 8061da177e4SLinus Torvalds 8071da177e4SLinus Torvalds he_dev->rbps_virt[i].virt = cpuaddr; 8081da177e4SLinus Torvalds he_dev->rbps_base[i].status = RBP_LOANED | RBP_SMALLBUF | (i << RBP_INDEX_OFF); 8091da177e4SLinus Torvalds he_dev->rbps_base[i].phys = dma_handle; 8101da177e4SLinus Torvalds 8111da177e4SLinus Torvalds } 8121da177e4SLinus Torvalds he_dev->rbps_tail = &he_dev->rbps_base[CONFIG_RBPS_SIZE - 1]; 8131da177e4SLinus Torvalds 8141da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbps_phys, G0_RBPS_S + (group * 32)); 8151da177e4SLinus Torvalds he_writel(he_dev, RBPS_MASK(he_dev->rbps_tail), 8161da177e4SLinus Torvalds G0_RBPS_T + (group * 32)); 8171da177e4SLinus Torvalds he_writel(he_dev, CONFIG_RBPS_BUFSIZE/4, 8181da177e4SLinus Torvalds G0_RBPS_BS + (group * 32)); 8191da177e4SLinus Torvalds he_writel(he_dev, 8201da177e4SLinus Torvalds RBP_THRESH(CONFIG_RBPS_THRESH) | 8211da177e4SLinus Torvalds RBP_QSIZE(CONFIG_RBPS_SIZE - 1) | 8221da177e4SLinus Torvalds RBP_INT_ENB, 8231da177e4SLinus Torvalds G0_RBPS_QI + (group * 32)); 8241da177e4SLinus Torvalds 8251da177e4SLinus Torvalds /* large buffer pool */ 8261da177e4SLinus Torvalds he_dev->rbpl_pool = pci_pool_create("rbpl", he_dev->pci_dev, 8271da177e4SLinus Torvalds CONFIG_RBPL_BUFSIZE, 8, 0); 8281da177e4SLinus Torvalds if (he_dev->rbpl_pool == NULL) { 8291da177e4SLinus Torvalds hprintk("unable to create rbpl pool\n"); 8301da177e4SLinus Torvalds return -ENOMEM; 8311da177e4SLinus Torvalds } 8321da177e4SLinus Torvalds 8331da177e4SLinus Torvalds he_dev->rbpl_base = pci_alloc_consistent(he_dev->pci_dev, 8341da177e4SLinus Torvalds CONFIG_RBPL_SIZE * sizeof(struct he_rbp), &he_dev->rbpl_phys); 8351da177e4SLinus Torvalds if (he_dev->rbpl_base == NULL) { 8361da177e4SLinus Torvalds hprintk("failed to alloc rbpl\n"); 8371da177e4SLinus Torvalds return -ENOMEM; 8381da177e4SLinus Torvalds } 8391da177e4SLinus Torvalds memset(he_dev->rbpl_base, 0, CONFIG_RBPL_SIZE * sizeof(struct he_rbp)); 8401da177e4SLinus Torvalds he_dev->rbpl_virt = kmalloc(CONFIG_RBPL_SIZE * sizeof(struct he_virt), GFP_KERNEL); 8411da177e4SLinus Torvalds 8421da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPL_SIZE; ++i) { 8431da177e4SLinus Torvalds dma_addr_t dma_handle; 8441da177e4SLinus Torvalds void *cpuaddr; 8451da177e4SLinus Torvalds 846441e143eSChristoph Lameter cpuaddr = pci_pool_alloc(he_dev->rbpl_pool, GFP_KERNEL|GFP_DMA, &dma_handle); 8471da177e4SLinus Torvalds if (cpuaddr == NULL) 8481da177e4SLinus Torvalds return -ENOMEM; 8491da177e4SLinus Torvalds 8501da177e4SLinus Torvalds he_dev->rbpl_virt[i].virt = cpuaddr; 8511da177e4SLinus Torvalds he_dev->rbpl_base[i].status = RBP_LOANED | (i << RBP_INDEX_OFF); 8521da177e4SLinus Torvalds he_dev->rbpl_base[i].phys = dma_handle; 8531da177e4SLinus Torvalds } 8541da177e4SLinus Torvalds he_dev->rbpl_tail = &he_dev->rbpl_base[CONFIG_RBPL_SIZE - 1]; 8551da177e4SLinus Torvalds 8561da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbpl_phys, G0_RBPL_S + (group * 32)); 8571da177e4SLinus Torvalds he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail), 8581da177e4SLinus Torvalds G0_RBPL_T + (group * 32)); 8591da177e4SLinus Torvalds he_writel(he_dev, CONFIG_RBPL_BUFSIZE/4, 8601da177e4SLinus Torvalds G0_RBPL_BS + (group * 32)); 8611da177e4SLinus Torvalds he_writel(he_dev, 8621da177e4SLinus Torvalds RBP_THRESH(CONFIG_RBPL_THRESH) | 8631da177e4SLinus Torvalds RBP_QSIZE(CONFIG_RBPL_SIZE - 1) | 8641da177e4SLinus Torvalds RBP_INT_ENB, 8651da177e4SLinus Torvalds G0_RBPL_QI + (group * 32)); 8661da177e4SLinus Torvalds 8671da177e4SLinus Torvalds /* rx buffer ready queue */ 8681da177e4SLinus Torvalds 8691da177e4SLinus Torvalds he_dev->rbrq_base = pci_alloc_consistent(he_dev->pci_dev, 8701da177e4SLinus Torvalds CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq), &he_dev->rbrq_phys); 8711da177e4SLinus Torvalds if (he_dev->rbrq_base == NULL) { 8721da177e4SLinus Torvalds hprintk("failed to allocate rbrq\n"); 8731da177e4SLinus Torvalds return -ENOMEM; 8741da177e4SLinus Torvalds } 8751da177e4SLinus Torvalds memset(he_dev->rbrq_base, 0, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq)); 8761da177e4SLinus Torvalds 8771da177e4SLinus Torvalds he_dev->rbrq_head = he_dev->rbrq_base; 8781da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbrq_phys, G0_RBRQ_ST + (group * 16)); 8791da177e4SLinus Torvalds he_writel(he_dev, 0, G0_RBRQ_H + (group * 16)); 8801da177e4SLinus Torvalds he_writel(he_dev, 8811da177e4SLinus Torvalds RBRQ_THRESH(CONFIG_RBRQ_THRESH) | RBRQ_SIZE(CONFIG_RBRQ_SIZE - 1), 8821da177e4SLinus Torvalds G0_RBRQ_Q + (group * 16)); 8831da177e4SLinus Torvalds if (irq_coalesce) { 8841da177e4SLinus Torvalds hprintk("coalescing interrupts\n"); 8851da177e4SLinus Torvalds he_writel(he_dev, RBRQ_TIME(768) | RBRQ_COUNT(7), 8861da177e4SLinus Torvalds G0_RBRQ_I + (group * 16)); 8871da177e4SLinus Torvalds } else 8881da177e4SLinus Torvalds he_writel(he_dev, RBRQ_TIME(0) | RBRQ_COUNT(1), 8891da177e4SLinus Torvalds G0_RBRQ_I + (group * 16)); 8901da177e4SLinus Torvalds 8911da177e4SLinus Torvalds /* tx buffer ready queue */ 8921da177e4SLinus Torvalds 8931da177e4SLinus Torvalds he_dev->tbrq_base = pci_alloc_consistent(he_dev->pci_dev, 8941da177e4SLinus Torvalds CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), &he_dev->tbrq_phys); 8951da177e4SLinus Torvalds if (he_dev->tbrq_base == NULL) { 8961da177e4SLinus Torvalds hprintk("failed to allocate tbrq\n"); 8971da177e4SLinus Torvalds return -ENOMEM; 8981da177e4SLinus Torvalds } 8991da177e4SLinus Torvalds memset(he_dev->tbrq_base, 0, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq)); 9001da177e4SLinus Torvalds 9011da177e4SLinus Torvalds he_dev->tbrq_head = he_dev->tbrq_base; 9021da177e4SLinus Torvalds 9031da177e4SLinus Torvalds he_writel(he_dev, he_dev->tbrq_phys, G0_TBRQ_B_T + (group * 16)); 9041da177e4SLinus Torvalds he_writel(he_dev, 0, G0_TBRQ_H + (group * 16)); 9051da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TBRQ_SIZE - 1, G0_TBRQ_S + (group * 16)); 9061da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TBRQ_THRESH, G0_TBRQ_THRESH + (group * 16)); 9071da177e4SLinus Torvalds 9081da177e4SLinus Torvalds return 0; 9091da177e4SLinus Torvalds } 9101da177e4SLinus Torvalds 9115b7c714eSRoland Dreier static int __devinit 9121da177e4SLinus Torvalds he_init_irq(struct he_dev *he_dev) 9131da177e4SLinus Torvalds { 9141da177e4SLinus Torvalds int i; 9151da177e4SLinus Torvalds 9161da177e4SLinus Torvalds /* 2.9.3.5 tail offset for each interrupt queue is located after the 9171da177e4SLinus Torvalds end of the interrupt queue */ 9181da177e4SLinus Torvalds 9191da177e4SLinus Torvalds he_dev->irq_base = pci_alloc_consistent(he_dev->pci_dev, 9201da177e4SLinus Torvalds (CONFIG_IRQ_SIZE+1) * sizeof(struct he_irq), &he_dev->irq_phys); 9211da177e4SLinus Torvalds if (he_dev->irq_base == NULL) { 9221da177e4SLinus Torvalds hprintk("failed to allocate irq\n"); 9231da177e4SLinus Torvalds return -ENOMEM; 9241da177e4SLinus Torvalds } 9251da177e4SLinus Torvalds he_dev->irq_tailoffset = (unsigned *) 9261da177e4SLinus Torvalds &he_dev->irq_base[CONFIG_IRQ_SIZE]; 9271da177e4SLinus Torvalds *he_dev->irq_tailoffset = 0; 9281da177e4SLinus Torvalds he_dev->irq_head = he_dev->irq_base; 9291da177e4SLinus Torvalds he_dev->irq_tail = he_dev->irq_base; 9301da177e4SLinus Torvalds 9311da177e4SLinus Torvalds for (i = 0; i < CONFIG_IRQ_SIZE; ++i) 9321da177e4SLinus Torvalds he_dev->irq_base[i].isw = ITYPE_INVALID; 9331da177e4SLinus Torvalds 9341da177e4SLinus Torvalds he_writel(he_dev, he_dev->irq_phys, IRQ0_BASE); 9351da177e4SLinus Torvalds he_writel(he_dev, 9361da177e4SLinus Torvalds IRQ_SIZE(CONFIG_IRQ_SIZE) | IRQ_THRESH(CONFIG_IRQ_THRESH), 9371da177e4SLinus Torvalds IRQ0_HEAD); 9381da177e4SLinus Torvalds he_writel(he_dev, IRQ_INT_A | IRQ_TYPE_LINE, IRQ0_CNTL); 9391da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ0_DATA); 9401da177e4SLinus Torvalds 9411da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_BASE); 9421da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_HEAD); 9431da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_CNTL); 9441da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_DATA); 9451da177e4SLinus Torvalds 9461da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_BASE); 9471da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_HEAD); 9481da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_CNTL); 9491da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_DATA); 9501da177e4SLinus Torvalds 9511da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_BASE); 9521da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_HEAD); 9531da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_CNTL); 9541da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_DATA); 9551da177e4SLinus Torvalds 9561da177e4SLinus Torvalds /* 2.9.3.2 interrupt queue mapping registers */ 9571da177e4SLinus Torvalds 9581da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_10_MAP); 9591da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_32_MAP); 9601da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_54_MAP); 9611da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_76_MAP); 9621da177e4SLinus Torvalds 963dace1453SThomas Gleixner if (request_irq(he_dev->pci_dev->irq, he_irq_handler, IRQF_DISABLED|IRQF_SHARED, DEV_LABEL, he_dev)) { 9641da177e4SLinus Torvalds hprintk("irq %d already in use\n", he_dev->pci_dev->irq); 9651da177e4SLinus Torvalds return -EINVAL; 9661da177e4SLinus Torvalds } 9671da177e4SLinus Torvalds 9681da177e4SLinus Torvalds he_dev->irq = he_dev->pci_dev->irq; 9691da177e4SLinus Torvalds 9701da177e4SLinus Torvalds return 0; 9711da177e4SLinus Torvalds } 9721da177e4SLinus Torvalds 973d17f0865SChas Williams static int __devinit 9741da177e4SLinus Torvalds he_start(struct atm_dev *dev) 9751da177e4SLinus Torvalds { 9761da177e4SLinus Torvalds struct he_dev *he_dev; 9771da177e4SLinus Torvalds struct pci_dev *pci_dev; 9781da177e4SLinus Torvalds unsigned long membase; 9791da177e4SLinus Torvalds 9801da177e4SLinus Torvalds u16 command; 9811da177e4SLinus Torvalds u32 gen_cntl_0, host_cntl, lb_swap; 9821da177e4SLinus Torvalds u8 cache_size, timer; 9831da177e4SLinus Torvalds 9841da177e4SLinus Torvalds unsigned err; 9851da177e4SLinus Torvalds unsigned int status, reg; 9861da177e4SLinus Torvalds int i, group; 9871da177e4SLinus Torvalds 9881da177e4SLinus Torvalds he_dev = HE_DEV(dev); 9891da177e4SLinus Torvalds pci_dev = he_dev->pci_dev; 9901da177e4SLinus Torvalds 9911da177e4SLinus Torvalds membase = pci_resource_start(pci_dev, 0); 9921da177e4SLinus Torvalds HPRINTK("membase = 0x%lx irq = %d.\n", membase, pci_dev->irq); 9931da177e4SLinus Torvalds 9941da177e4SLinus Torvalds /* 9951da177e4SLinus Torvalds * pci bus controller initialization 9961da177e4SLinus Torvalds */ 9971da177e4SLinus Torvalds 9981da177e4SLinus Torvalds /* 4.3 pci bus controller-specific initialization */ 9991da177e4SLinus Torvalds if (pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0) != 0) { 10001da177e4SLinus Torvalds hprintk("can't read GEN_CNTL_0\n"); 10011da177e4SLinus Torvalds return -EINVAL; 10021da177e4SLinus Torvalds } 10031da177e4SLinus Torvalds gen_cntl_0 |= (MRL_ENB | MRM_ENB | IGNORE_TIMEOUT); 10041da177e4SLinus Torvalds if (pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0) != 0) { 10051da177e4SLinus Torvalds hprintk("can't write GEN_CNTL_0.\n"); 10061da177e4SLinus Torvalds return -EINVAL; 10071da177e4SLinus Torvalds } 10081da177e4SLinus Torvalds 10091da177e4SLinus Torvalds if (pci_read_config_word(pci_dev, PCI_COMMAND, &command) != 0) { 10101da177e4SLinus Torvalds hprintk("can't read PCI_COMMAND.\n"); 10111da177e4SLinus Torvalds return -EINVAL; 10121da177e4SLinus Torvalds } 10131da177e4SLinus Torvalds 10141da177e4SLinus Torvalds command |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE); 10151da177e4SLinus Torvalds if (pci_write_config_word(pci_dev, PCI_COMMAND, command) != 0) { 10161da177e4SLinus Torvalds hprintk("can't enable memory.\n"); 10171da177e4SLinus Torvalds return -EINVAL; 10181da177e4SLinus Torvalds } 10191da177e4SLinus Torvalds 10201da177e4SLinus Torvalds if (pci_read_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, &cache_size)) { 10211da177e4SLinus Torvalds hprintk("can't read cache line size?\n"); 10221da177e4SLinus Torvalds return -EINVAL; 10231da177e4SLinus Torvalds } 10241da177e4SLinus Torvalds 10251da177e4SLinus Torvalds if (cache_size < 16) { 10261da177e4SLinus Torvalds cache_size = 16; 10271da177e4SLinus Torvalds if (pci_write_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, cache_size)) 10281da177e4SLinus Torvalds hprintk("can't set cache line size to %d\n", cache_size); 10291da177e4SLinus Torvalds } 10301da177e4SLinus Torvalds 10311da177e4SLinus Torvalds if (pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &timer)) { 10321da177e4SLinus Torvalds hprintk("can't read latency timer?\n"); 10331da177e4SLinus Torvalds return -EINVAL; 10341da177e4SLinus Torvalds } 10351da177e4SLinus Torvalds 10361da177e4SLinus Torvalds /* from table 3.9 10371da177e4SLinus Torvalds * 10381da177e4SLinus Torvalds * LAT_TIMER = 1 + AVG_LAT + BURST_SIZE/BUS_SIZE 10391da177e4SLinus Torvalds * 10401da177e4SLinus Torvalds * AVG_LAT: The average first data read/write latency [maximum 16 clock cycles] 10411da177e4SLinus Torvalds * BURST_SIZE: 1536 bytes (read) for 622, 768 bytes (read) for 155 [192 clock cycles] 10421da177e4SLinus Torvalds * 10431da177e4SLinus Torvalds */ 10441da177e4SLinus Torvalds #define LAT_TIMER 209 10451da177e4SLinus Torvalds if (timer < LAT_TIMER) { 10461da177e4SLinus Torvalds HPRINTK("latency timer was %d, setting to %d\n", timer, LAT_TIMER); 10471da177e4SLinus Torvalds timer = LAT_TIMER; 10481da177e4SLinus Torvalds if (pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, timer)) 10491da177e4SLinus Torvalds hprintk("can't set latency timer to %d\n", timer); 10501da177e4SLinus Torvalds } 10511da177e4SLinus Torvalds 10521da177e4SLinus Torvalds if (!(he_dev->membase = ioremap(membase, HE_REGMAP_SIZE))) { 10531da177e4SLinus Torvalds hprintk("can't set up page mapping\n"); 10541da177e4SLinus Torvalds return -EINVAL; 10551da177e4SLinus Torvalds } 10561da177e4SLinus Torvalds 10571da177e4SLinus Torvalds /* 4.4 card reset */ 10581da177e4SLinus Torvalds he_writel(he_dev, 0x0, RESET_CNTL); 10591da177e4SLinus Torvalds he_writel(he_dev, 0xff, RESET_CNTL); 10601da177e4SLinus Torvalds 10611da177e4SLinus Torvalds udelay(16*1000); /* 16 ms */ 10621da177e4SLinus Torvalds status = he_readl(he_dev, RESET_CNTL); 10631da177e4SLinus Torvalds if ((status & BOARD_RST_STATUS) == 0) { 10641da177e4SLinus Torvalds hprintk("reset failed\n"); 10651da177e4SLinus Torvalds return -EINVAL; 10661da177e4SLinus Torvalds } 10671da177e4SLinus Torvalds 10681da177e4SLinus Torvalds /* 4.5 set bus width */ 10691da177e4SLinus Torvalds host_cntl = he_readl(he_dev, HOST_CNTL); 10701da177e4SLinus Torvalds if (host_cntl & PCI_BUS_SIZE64) 10711da177e4SLinus Torvalds gen_cntl_0 |= ENBL_64; 10721da177e4SLinus Torvalds else 10731da177e4SLinus Torvalds gen_cntl_0 &= ~ENBL_64; 10741da177e4SLinus Torvalds 10751da177e4SLinus Torvalds if (disable64 == 1) { 10761da177e4SLinus Torvalds hprintk("disabling 64-bit pci bus transfers\n"); 10771da177e4SLinus Torvalds gen_cntl_0 &= ~ENBL_64; 10781da177e4SLinus Torvalds } 10791da177e4SLinus Torvalds 10801da177e4SLinus Torvalds if (gen_cntl_0 & ENBL_64) 10811da177e4SLinus Torvalds hprintk("64-bit transfers enabled\n"); 10821da177e4SLinus Torvalds 10831da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 10841da177e4SLinus Torvalds 10851da177e4SLinus Torvalds /* 4.7 read prom contents */ 10861da177e4SLinus Torvalds for (i = 0; i < PROD_ID_LEN; ++i) 10871da177e4SLinus Torvalds he_dev->prod_id[i] = read_prom_byte(he_dev, PROD_ID + i); 10881da177e4SLinus Torvalds 10891da177e4SLinus Torvalds he_dev->media = read_prom_byte(he_dev, MEDIA); 10901da177e4SLinus Torvalds 10911da177e4SLinus Torvalds for (i = 0; i < 6; ++i) 10921da177e4SLinus Torvalds dev->esi[i] = read_prom_byte(he_dev, MAC_ADDR + i); 10931da177e4SLinus Torvalds 10941da177e4SLinus Torvalds hprintk("%s%s, %x:%x:%x:%x:%x:%x\n", 10951da177e4SLinus Torvalds he_dev->prod_id, 10961da177e4SLinus Torvalds he_dev->media & 0x40 ? "SM" : "MM", 10971da177e4SLinus Torvalds dev->esi[0], 10981da177e4SLinus Torvalds dev->esi[1], 10991da177e4SLinus Torvalds dev->esi[2], 11001da177e4SLinus Torvalds dev->esi[3], 11011da177e4SLinus Torvalds dev->esi[4], 11021da177e4SLinus Torvalds dev->esi[5]); 11031da177e4SLinus Torvalds he_dev->atm_dev->link_rate = he_is622(he_dev) ? 11041da177e4SLinus Torvalds ATM_OC12_PCR : ATM_OC3_PCR; 11051da177e4SLinus Torvalds 11061da177e4SLinus Torvalds /* 4.6 set host endianess */ 11071da177e4SLinus Torvalds lb_swap = he_readl(he_dev, LB_SWAP); 11081da177e4SLinus Torvalds if (he_is622(he_dev)) 11091da177e4SLinus Torvalds lb_swap &= ~XFER_SIZE; /* 4 cells */ 11101da177e4SLinus Torvalds else 11111da177e4SLinus Torvalds lb_swap |= XFER_SIZE; /* 8 cells */ 11121da177e4SLinus Torvalds #ifdef __BIG_ENDIAN 11131da177e4SLinus Torvalds lb_swap |= DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST; 11141da177e4SLinus Torvalds #else 11151da177e4SLinus Torvalds lb_swap &= ~(DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST | 11161da177e4SLinus Torvalds DATA_WR_SWAP | DATA_RD_SWAP | DESC_RD_SWAP); 11171da177e4SLinus Torvalds #endif /* __BIG_ENDIAN */ 11181da177e4SLinus Torvalds he_writel(he_dev, lb_swap, LB_SWAP); 11191da177e4SLinus Torvalds 11201da177e4SLinus Torvalds /* 4.8 sdram controller initialization */ 11211da177e4SLinus Torvalds he_writel(he_dev, he_is622(he_dev) ? LB_64_ENB : 0x0, SDRAM_CTL); 11221da177e4SLinus Torvalds 11231da177e4SLinus Torvalds /* 4.9 initialize rnum value */ 11241da177e4SLinus Torvalds lb_swap |= SWAP_RNUM_MAX(0xf); 11251da177e4SLinus Torvalds he_writel(he_dev, lb_swap, LB_SWAP); 11261da177e4SLinus Torvalds 11271da177e4SLinus Torvalds /* 4.10 initialize the interrupt queues */ 11281da177e4SLinus Torvalds if ((err = he_init_irq(he_dev)) != 0) 11291da177e4SLinus Torvalds return err; 11301da177e4SLinus Torvalds 11311da177e4SLinus Torvalds /* 4.11 enable pci bus controller state machines */ 11321da177e4SLinus Torvalds host_cntl |= (OUTFF_ENB | CMDFF_ENB | 11331da177e4SLinus Torvalds QUICK_RD_RETRY | QUICK_WR_RETRY | PERR_INT_ENB); 11341da177e4SLinus Torvalds he_writel(he_dev, host_cntl, HOST_CNTL); 11351da177e4SLinus Torvalds 11361da177e4SLinus Torvalds gen_cntl_0 |= INT_PROC_ENBL|INIT_ENB; 11371da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 11381da177e4SLinus Torvalds 11391da177e4SLinus Torvalds /* 11401da177e4SLinus Torvalds * atm network controller initialization 11411da177e4SLinus Torvalds */ 11421da177e4SLinus Torvalds 11431da177e4SLinus Torvalds /* 5.1.1 generic configuration state */ 11441da177e4SLinus Torvalds 11451da177e4SLinus Torvalds /* 11461da177e4SLinus Torvalds * local (cell) buffer memory map 11471da177e4SLinus Torvalds * 11481da177e4SLinus Torvalds * HE155 HE622 11491da177e4SLinus Torvalds * 11501da177e4SLinus Torvalds * 0 ____________1023 bytes 0 _______________________2047 bytes 11511da177e4SLinus Torvalds * | | | | | 11521da177e4SLinus Torvalds * | utility | | rx0 | | 11531da177e4SLinus Torvalds * 5|____________| 255|___________________| u | 11541da177e4SLinus Torvalds * 6| | 256| | t | 11551da177e4SLinus Torvalds * | | | | i | 11561da177e4SLinus Torvalds * | rx0 | row | tx | l | 11571da177e4SLinus Torvalds * | | | | i | 11581da177e4SLinus Torvalds * | | 767|___________________| t | 11591da177e4SLinus Torvalds * 517|____________| 768| | y | 11601da177e4SLinus Torvalds * row 518| | | rx1 | | 11611da177e4SLinus Torvalds * | | 1023|___________________|___| 11621da177e4SLinus Torvalds * | | 11631da177e4SLinus Torvalds * | tx | 11641da177e4SLinus Torvalds * | | 11651da177e4SLinus Torvalds * | | 11661da177e4SLinus Torvalds * 1535|____________| 11671da177e4SLinus Torvalds * 1536| | 11681da177e4SLinus Torvalds * | rx1 | 11691da177e4SLinus Torvalds * 2047|____________| 11701da177e4SLinus Torvalds * 11711da177e4SLinus Torvalds */ 11721da177e4SLinus Torvalds 11731da177e4SLinus Torvalds /* total 4096 connections */ 11741da177e4SLinus Torvalds he_dev->vcibits = CONFIG_DEFAULT_VCIBITS; 11751da177e4SLinus Torvalds he_dev->vpibits = CONFIG_DEFAULT_VPIBITS; 11761da177e4SLinus Torvalds 11771da177e4SLinus Torvalds if (nvpibits != -1 && nvcibits != -1 && nvpibits+nvcibits != HE_MAXCIDBITS) { 11781da177e4SLinus Torvalds hprintk("nvpibits + nvcibits != %d\n", HE_MAXCIDBITS); 11791da177e4SLinus Torvalds return -ENODEV; 11801da177e4SLinus Torvalds } 11811da177e4SLinus Torvalds 11821da177e4SLinus Torvalds if (nvpibits != -1) { 11831da177e4SLinus Torvalds he_dev->vpibits = nvpibits; 11841da177e4SLinus Torvalds he_dev->vcibits = HE_MAXCIDBITS - nvpibits; 11851da177e4SLinus Torvalds } 11861da177e4SLinus Torvalds 11871da177e4SLinus Torvalds if (nvcibits != -1) { 11881da177e4SLinus Torvalds he_dev->vcibits = nvcibits; 11891da177e4SLinus Torvalds he_dev->vpibits = HE_MAXCIDBITS - nvcibits; 11901da177e4SLinus Torvalds } 11911da177e4SLinus Torvalds 11921da177e4SLinus Torvalds 11931da177e4SLinus Torvalds if (he_is622(he_dev)) { 11941da177e4SLinus Torvalds he_dev->cells_per_row = 40; 11951da177e4SLinus Torvalds he_dev->bytes_per_row = 2048; 11961da177e4SLinus Torvalds he_dev->r0_numrows = 256; 11971da177e4SLinus Torvalds he_dev->tx_numrows = 512; 11981da177e4SLinus Torvalds he_dev->r1_numrows = 256; 11991da177e4SLinus Torvalds he_dev->r0_startrow = 0; 12001da177e4SLinus Torvalds he_dev->tx_startrow = 256; 12011da177e4SLinus Torvalds he_dev->r1_startrow = 768; 12021da177e4SLinus Torvalds } else { 12031da177e4SLinus Torvalds he_dev->cells_per_row = 20; 12041da177e4SLinus Torvalds he_dev->bytes_per_row = 1024; 12051da177e4SLinus Torvalds he_dev->r0_numrows = 512; 12061da177e4SLinus Torvalds he_dev->tx_numrows = 1018; 12071da177e4SLinus Torvalds he_dev->r1_numrows = 512; 12081da177e4SLinus Torvalds he_dev->r0_startrow = 6; 12091da177e4SLinus Torvalds he_dev->tx_startrow = 518; 12101da177e4SLinus Torvalds he_dev->r1_startrow = 1536; 12111da177e4SLinus Torvalds } 12121da177e4SLinus Torvalds 12131da177e4SLinus Torvalds he_dev->cells_per_lbuf = 4; 12141da177e4SLinus Torvalds he_dev->buffer_limit = 4; 12151da177e4SLinus Torvalds he_dev->r0_numbuffs = he_dev->r0_numrows * 12161da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12171da177e4SLinus Torvalds if (he_dev->r0_numbuffs > 2560) 12181da177e4SLinus Torvalds he_dev->r0_numbuffs = 2560; 12191da177e4SLinus Torvalds 12201da177e4SLinus Torvalds he_dev->r1_numbuffs = he_dev->r1_numrows * 12211da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12221da177e4SLinus Torvalds if (he_dev->r1_numbuffs > 2560) 12231da177e4SLinus Torvalds he_dev->r1_numbuffs = 2560; 12241da177e4SLinus Torvalds 12251da177e4SLinus Torvalds he_dev->tx_numbuffs = he_dev->tx_numrows * 12261da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12271da177e4SLinus Torvalds if (he_dev->tx_numbuffs > 5120) 12281da177e4SLinus Torvalds he_dev->tx_numbuffs = 5120; 12291da177e4SLinus Torvalds 12301da177e4SLinus Torvalds /* 5.1.2 configure hardware dependent registers */ 12311da177e4SLinus Torvalds 12321da177e4SLinus Torvalds he_writel(he_dev, 12331da177e4SLinus Torvalds SLICE_X(0x2) | ARB_RNUM_MAX(0xf) | TH_PRTY(0x3) | 12341da177e4SLinus Torvalds RH_PRTY(0x3) | TL_PRTY(0x2) | RL_PRTY(0x1) | 12351da177e4SLinus Torvalds (he_is622(he_dev) ? BUS_MULTI(0x28) : BUS_MULTI(0x46)) | 12361da177e4SLinus Torvalds (he_is622(he_dev) ? NET_PREF(0x50) : NET_PREF(0x8c)), 12371da177e4SLinus Torvalds LBARB); 12381da177e4SLinus Torvalds 12391da177e4SLinus Torvalds he_writel(he_dev, BANK_ON | 12401da177e4SLinus Torvalds (he_is622(he_dev) ? (REF_RATE(0x384) | WIDE_DATA) : REF_RATE(0x150)), 12411da177e4SLinus Torvalds SDRAMCON); 12421da177e4SLinus Torvalds 12431da177e4SLinus Torvalds he_writel(he_dev, 12441da177e4SLinus Torvalds (he_is622(he_dev) ? RM_BANK_WAIT(1) : RM_BANK_WAIT(0)) | 12451da177e4SLinus Torvalds RM_RW_WAIT(1), RCMCONFIG); 12461da177e4SLinus Torvalds he_writel(he_dev, 12471da177e4SLinus Torvalds (he_is622(he_dev) ? TM_BANK_WAIT(2) : TM_BANK_WAIT(1)) | 12481da177e4SLinus Torvalds TM_RW_WAIT(1), TCMCONFIG); 12491da177e4SLinus Torvalds 12501da177e4SLinus Torvalds he_writel(he_dev, he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD, LB_CONFIG); 12511da177e4SLinus Torvalds 12521da177e4SLinus Torvalds he_writel(he_dev, 12531da177e4SLinus Torvalds (he_is622(he_dev) ? UT_RD_DELAY(8) : UT_RD_DELAY(0)) | 12541da177e4SLinus Torvalds (he_is622(he_dev) ? RC_UT_MODE(0) : RC_UT_MODE(1)) | 12551da177e4SLinus Torvalds RX_VALVP(he_dev->vpibits) | 12561da177e4SLinus Torvalds RX_VALVC(he_dev->vcibits), RC_CONFIG); 12571da177e4SLinus Torvalds 12581da177e4SLinus Torvalds he_writel(he_dev, DRF_THRESH(0x20) | 12591da177e4SLinus Torvalds (he_is622(he_dev) ? TX_UT_MODE(0) : TX_UT_MODE(1)) | 12601da177e4SLinus Torvalds TX_VCI_MASK(he_dev->vcibits) | 12611da177e4SLinus Torvalds LBFREE_CNT(he_dev->tx_numbuffs), TX_CONFIG); 12621da177e4SLinus Torvalds 12631da177e4SLinus Torvalds he_writel(he_dev, 0x0, TXAAL5_PROTO); 12641da177e4SLinus Torvalds 12651da177e4SLinus Torvalds he_writel(he_dev, PHY_INT_ENB | 12661da177e4SLinus Torvalds (he_is622(he_dev) ? PTMR_PRE(67 - 1) : PTMR_PRE(50 - 1)), 12671da177e4SLinus Torvalds RH_CONFIG); 12681da177e4SLinus Torvalds 12691da177e4SLinus Torvalds /* 5.1.3 initialize connection memory */ 12701da177e4SLinus Torvalds 12711da177e4SLinus Torvalds for (i = 0; i < TCM_MEM_SIZE; ++i) 12721da177e4SLinus Torvalds he_writel_tcm(he_dev, 0, i); 12731da177e4SLinus Torvalds 12741da177e4SLinus Torvalds for (i = 0; i < RCM_MEM_SIZE; ++i) 12751da177e4SLinus Torvalds he_writel_rcm(he_dev, 0, i); 12761da177e4SLinus Torvalds 12771da177e4SLinus Torvalds /* 12781da177e4SLinus Torvalds * transmit connection memory map 12791da177e4SLinus Torvalds * 12801da177e4SLinus Torvalds * tx memory 12811da177e4SLinus Torvalds * 0x0 ___________________ 12821da177e4SLinus Torvalds * | | 12831da177e4SLinus Torvalds * | | 12841da177e4SLinus Torvalds * | TSRa | 12851da177e4SLinus Torvalds * | | 12861da177e4SLinus Torvalds * | | 12871da177e4SLinus Torvalds * 0x8000|___________________| 12881da177e4SLinus Torvalds * | | 12891da177e4SLinus Torvalds * | TSRb | 12901da177e4SLinus Torvalds * 0xc000|___________________| 12911da177e4SLinus Torvalds * | | 12921da177e4SLinus Torvalds * | TSRc | 12931da177e4SLinus Torvalds * 0xe000|___________________| 12941da177e4SLinus Torvalds * | TSRd | 12951da177e4SLinus Torvalds * 0xf000|___________________| 12961da177e4SLinus Torvalds * | tmABR | 12971da177e4SLinus Torvalds * 0x10000|___________________| 12981da177e4SLinus Torvalds * | | 12991da177e4SLinus Torvalds * | tmTPD | 13001da177e4SLinus Torvalds * |___________________| 13011da177e4SLinus Torvalds * | | 13021da177e4SLinus Torvalds * .... 13031da177e4SLinus Torvalds * 0x1ffff|___________________| 13041da177e4SLinus Torvalds * 13051da177e4SLinus Torvalds * 13061da177e4SLinus Torvalds */ 13071da177e4SLinus Torvalds 13081da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRB, TSRB_BA); 13091da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRC, TSRC_BA); 13101da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRD, TSRD_BA); 13111da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TMABR, TMABR_BA); 13121da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TPDBA, TPD_BA); 13131da177e4SLinus Torvalds 13141da177e4SLinus Torvalds 13151da177e4SLinus Torvalds /* 13161da177e4SLinus Torvalds * receive connection memory map 13171da177e4SLinus Torvalds * 13181da177e4SLinus Torvalds * 0x0 ___________________ 13191da177e4SLinus Torvalds * | | 13201da177e4SLinus Torvalds * | | 13211da177e4SLinus Torvalds * | RSRa | 13221da177e4SLinus Torvalds * | | 13231da177e4SLinus Torvalds * | | 13241da177e4SLinus Torvalds * 0x8000|___________________| 13251da177e4SLinus Torvalds * | | 13261da177e4SLinus Torvalds * | rx0/1 | 13271da177e4SLinus Torvalds * | LBM | link lists of local 13281da177e4SLinus Torvalds * | tx | buffer memory 13291da177e4SLinus Torvalds * | | 13301da177e4SLinus Torvalds * 0xd000|___________________| 13311da177e4SLinus Torvalds * | | 13321da177e4SLinus Torvalds * | rmABR | 13331da177e4SLinus Torvalds * 0xe000|___________________| 13341da177e4SLinus Torvalds * | | 13351da177e4SLinus Torvalds * | RSRb | 13361da177e4SLinus Torvalds * |___________________| 13371da177e4SLinus Torvalds * | | 13381da177e4SLinus Torvalds * .... 13391da177e4SLinus Torvalds * 0xffff|___________________| 13401da177e4SLinus Torvalds */ 13411da177e4SLinus Torvalds 13421da177e4SLinus Torvalds he_writel(he_dev, 0x08000, RCMLBM_BA); 13431da177e4SLinus Torvalds he_writel(he_dev, 0x0e000, RCMRSRB_BA); 13441da177e4SLinus Torvalds he_writel(he_dev, 0x0d800, RCMABR_BA); 13451da177e4SLinus Torvalds 13461da177e4SLinus Torvalds /* 5.1.4 initialize local buffer free pools linked lists */ 13471da177e4SLinus Torvalds 13481da177e4SLinus Torvalds he_init_rx_lbfp0(he_dev); 13491da177e4SLinus Torvalds he_init_rx_lbfp1(he_dev); 13501da177e4SLinus Torvalds 13511da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_H); 13521da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_T); 13531da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_H2); 13541da177e4SLinus Torvalds 13551da177e4SLinus Torvalds he_writel(he_dev, 512, RXTHRSH); /* 10% of r0+r1 buffers */ 13561da177e4SLinus Torvalds he_writel(he_dev, 256, LITHRSH); /* 5% of r0+r1 buffers */ 13571da177e4SLinus Torvalds 13581da177e4SLinus Torvalds he_init_tx_lbfp(he_dev); 13591da177e4SLinus Torvalds 13601da177e4SLinus Torvalds he_writel(he_dev, he_is622(he_dev) ? 0x104780 : 0x800, UBUFF_BA); 13611da177e4SLinus Torvalds 13621da177e4SLinus Torvalds /* 5.1.5 initialize intermediate receive queues */ 13631da177e4SLinus Torvalds 13641da177e4SLinus Torvalds if (he_is622(he_dev)) { 13651da177e4SLinus Torvalds he_writel(he_dev, 0x000f, G0_INMQ_S); 13661da177e4SLinus Torvalds he_writel(he_dev, 0x200f, G0_INMQ_L); 13671da177e4SLinus Torvalds 13681da177e4SLinus Torvalds he_writel(he_dev, 0x001f, G1_INMQ_S); 13691da177e4SLinus Torvalds he_writel(he_dev, 0x201f, G1_INMQ_L); 13701da177e4SLinus Torvalds 13711da177e4SLinus Torvalds he_writel(he_dev, 0x002f, G2_INMQ_S); 13721da177e4SLinus Torvalds he_writel(he_dev, 0x202f, G2_INMQ_L); 13731da177e4SLinus Torvalds 13741da177e4SLinus Torvalds he_writel(he_dev, 0x003f, G3_INMQ_S); 13751da177e4SLinus Torvalds he_writel(he_dev, 0x203f, G3_INMQ_L); 13761da177e4SLinus Torvalds 13771da177e4SLinus Torvalds he_writel(he_dev, 0x004f, G4_INMQ_S); 13781da177e4SLinus Torvalds he_writel(he_dev, 0x204f, G4_INMQ_L); 13791da177e4SLinus Torvalds 13801da177e4SLinus Torvalds he_writel(he_dev, 0x005f, G5_INMQ_S); 13811da177e4SLinus Torvalds he_writel(he_dev, 0x205f, G5_INMQ_L); 13821da177e4SLinus Torvalds 13831da177e4SLinus Torvalds he_writel(he_dev, 0x006f, G6_INMQ_S); 13841da177e4SLinus Torvalds he_writel(he_dev, 0x206f, G6_INMQ_L); 13851da177e4SLinus Torvalds 13861da177e4SLinus Torvalds he_writel(he_dev, 0x007f, G7_INMQ_S); 13871da177e4SLinus Torvalds he_writel(he_dev, 0x207f, G7_INMQ_L); 13881da177e4SLinus Torvalds } else { 13891da177e4SLinus Torvalds he_writel(he_dev, 0x0000, G0_INMQ_S); 13901da177e4SLinus Torvalds he_writel(he_dev, 0x0008, G0_INMQ_L); 13911da177e4SLinus Torvalds 13921da177e4SLinus Torvalds he_writel(he_dev, 0x0001, G1_INMQ_S); 13931da177e4SLinus Torvalds he_writel(he_dev, 0x0009, G1_INMQ_L); 13941da177e4SLinus Torvalds 13951da177e4SLinus Torvalds he_writel(he_dev, 0x0002, G2_INMQ_S); 13961da177e4SLinus Torvalds he_writel(he_dev, 0x000a, G2_INMQ_L); 13971da177e4SLinus Torvalds 13981da177e4SLinus Torvalds he_writel(he_dev, 0x0003, G3_INMQ_S); 13991da177e4SLinus Torvalds he_writel(he_dev, 0x000b, G3_INMQ_L); 14001da177e4SLinus Torvalds 14011da177e4SLinus Torvalds he_writel(he_dev, 0x0004, G4_INMQ_S); 14021da177e4SLinus Torvalds he_writel(he_dev, 0x000c, G4_INMQ_L); 14031da177e4SLinus Torvalds 14041da177e4SLinus Torvalds he_writel(he_dev, 0x0005, G5_INMQ_S); 14051da177e4SLinus Torvalds he_writel(he_dev, 0x000d, G5_INMQ_L); 14061da177e4SLinus Torvalds 14071da177e4SLinus Torvalds he_writel(he_dev, 0x0006, G6_INMQ_S); 14081da177e4SLinus Torvalds he_writel(he_dev, 0x000e, G6_INMQ_L); 14091da177e4SLinus Torvalds 14101da177e4SLinus Torvalds he_writel(he_dev, 0x0007, G7_INMQ_S); 14111da177e4SLinus Torvalds he_writel(he_dev, 0x000f, G7_INMQ_L); 14121da177e4SLinus Torvalds } 14131da177e4SLinus Torvalds 14141da177e4SLinus Torvalds /* 5.1.6 application tunable parameters */ 14151da177e4SLinus Torvalds 14161da177e4SLinus Torvalds he_writel(he_dev, 0x0, MCC); 14171da177e4SLinus Torvalds he_writel(he_dev, 0x0, OEC); 14181da177e4SLinus Torvalds he_writel(he_dev, 0x0, DCC); 14191da177e4SLinus Torvalds he_writel(he_dev, 0x0, CEC); 14201da177e4SLinus Torvalds 14211da177e4SLinus Torvalds /* 5.1.7 cs block initialization */ 14221da177e4SLinus Torvalds 14231da177e4SLinus Torvalds he_init_cs_block(he_dev); 14241da177e4SLinus Torvalds 14251da177e4SLinus Torvalds /* 5.1.8 cs block connection memory initialization */ 14261da177e4SLinus Torvalds 14271da177e4SLinus Torvalds if (he_init_cs_block_rcm(he_dev) < 0) 14281da177e4SLinus Torvalds return -ENOMEM; 14291da177e4SLinus Torvalds 14301da177e4SLinus Torvalds /* 5.1.10 initialize host structures */ 14311da177e4SLinus Torvalds 14321da177e4SLinus Torvalds he_init_tpdrq(he_dev); 14331da177e4SLinus Torvalds 14341da177e4SLinus Torvalds he_dev->tpd_pool = pci_pool_create("tpd", he_dev->pci_dev, 14351da177e4SLinus Torvalds sizeof(struct he_tpd), TPD_ALIGNMENT, 0); 14361da177e4SLinus Torvalds if (he_dev->tpd_pool == NULL) { 14371da177e4SLinus Torvalds hprintk("unable to create tpd pci_pool\n"); 14381da177e4SLinus Torvalds return -ENOMEM; 14391da177e4SLinus Torvalds } 14401da177e4SLinus Torvalds 14411da177e4SLinus Torvalds INIT_LIST_HEAD(&he_dev->outstanding_tpds); 14421da177e4SLinus Torvalds 14431da177e4SLinus Torvalds if (he_init_group(he_dev, 0) != 0) 14441da177e4SLinus Torvalds return -ENOMEM; 14451da177e4SLinus Torvalds 14461da177e4SLinus Torvalds for (group = 1; group < HE_NUM_GROUPS; ++group) { 14471da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_S + (group * 32)); 14481da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_T + (group * 32)); 14491da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_QI + (group * 32)); 14501da177e4SLinus Torvalds he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 14511da177e4SLinus Torvalds G0_RBPS_BS + (group * 32)); 14521da177e4SLinus Torvalds 14531da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_S + (group * 32)); 14541da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_T + (group * 32)); 14551da177e4SLinus Torvalds he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 14561da177e4SLinus Torvalds G0_RBPL_QI + (group * 32)); 14571da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_BS + (group * 32)); 14581da177e4SLinus Torvalds 14591da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_ST + (group * 16)); 14601da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_H + (group * 16)); 14611da177e4SLinus Torvalds he_writel(he_dev, RBRQ_THRESH(0x1) | RBRQ_SIZE(0x0), 14621da177e4SLinus Torvalds G0_RBRQ_Q + (group * 16)); 14631da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_I + (group * 16)); 14641da177e4SLinus Torvalds 14651da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_B_T + (group * 16)); 14661da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_H + (group * 16)); 14671da177e4SLinus Torvalds he_writel(he_dev, TBRQ_THRESH(0x1), 14681da177e4SLinus Torvalds G0_TBRQ_THRESH + (group * 16)); 14691da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_S + (group * 16)); 14701da177e4SLinus Torvalds } 14711da177e4SLinus Torvalds 14721da177e4SLinus Torvalds /* host status page */ 14731da177e4SLinus Torvalds 14741da177e4SLinus Torvalds he_dev->hsp = pci_alloc_consistent(he_dev->pci_dev, 14751da177e4SLinus Torvalds sizeof(struct he_hsp), &he_dev->hsp_phys); 14761da177e4SLinus Torvalds if (he_dev->hsp == NULL) { 14771da177e4SLinus Torvalds hprintk("failed to allocate host status page\n"); 14781da177e4SLinus Torvalds return -ENOMEM; 14791da177e4SLinus Torvalds } 14801da177e4SLinus Torvalds memset(he_dev->hsp, 0, sizeof(struct he_hsp)); 14811da177e4SLinus Torvalds he_writel(he_dev, he_dev->hsp_phys, HSP_BA); 14821da177e4SLinus Torvalds 14831da177e4SLinus Torvalds /* initialize framer */ 14841da177e4SLinus Torvalds 14851da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 1486059e3779SChas Williams if (he_isMM(he_dev)) 14871da177e4SLinus Torvalds suni_init(he_dev->atm_dev); 14881da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->start) 14891da177e4SLinus Torvalds he_dev->atm_dev->phy->start(he_dev->atm_dev); 14901da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 14911da177e4SLinus Torvalds 14921da177e4SLinus Torvalds if (sdh) { 14931da177e4SLinus Torvalds /* this really should be in suni.c but for now... */ 14941da177e4SLinus Torvalds int val; 14951da177e4SLinus Torvalds 14961da177e4SLinus Torvalds val = he_phy_get(he_dev->atm_dev, SUNI_TPOP_APM); 14971da177e4SLinus Torvalds val = (val & ~SUNI_TPOP_APM_S) | (SUNI_TPOP_S_SDH << SUNI_TPOP_APM_S_SHIFT); 14981da177e4SLinus Torvalds he_phy_put(he_dev->atm_dev, val, SUNI_TPOP_APM); 149965c3e471SChas Williams he_phy_put(he_dev->atm_dev, SUNI_TACP_IUCHP_CLP, SUNI_TACP_IUCHP); 15001da177e4SLinus Torvalds } 15011da177e4SLinus Torvalds 15021da177e4SLinus Torvalds /* 5.1.12 enable transmit and receive */ 15031da177e4SLinus Torvalds 15041da177e4SLinus Torvalds reg = he_readl_mbox(he_dev, CS_ERCTL0); 15051da177e4SLinus Torvalds reg |= TX_ENABLE|ER_ENABLE; 15061da177e4SLinus Torvalds he_writel_mbox(he_dev, reg, CS_ERCTL0); 15071da177e4SLinus Torvalds 15081da177e4SLinus Torvalds reg = he_readl(he_dev, RC_CONFIG); 15091da177e4SLinus Torvalds reg |= RX_ENABLE; 15101da177e4SLinus Torvalds he_writel(he_dev, reg, RC_CONFIG); 15111da177e4SLinus Torvalds 15121da177e4SLinus Torvalds for (i = 0; i < HE_NUM_CS_STPER; ++i) { 15131da177e4SLinus Torvalds he_dev->cs_stper[i].inuse = 0; 15141da177e4SLinus Torvalds he_dev->cs_stper[i].pcr = -1; 15151da177e4SLinus Torvalds } 15161da177e4SLinus Torvalds he_dev->total_bw = 0; 15171da177e4SLinus Torvalds 15181da177e4SLinus Torvalds 15191da177e4SLinus Torvalds /* atm linux initialization */ 15201da177e4SLinus Torvalds 15211da177e4SLinus Torvalds he_dev->atm_dev->ci_range.vpi_bits = he_dev->vpibits; 15221da177e4SLinus Torvalds he_dev->atm_dev->ci_range.vci_bits = he_dev->vcibits; 15231da177e4SLinus Torvalds 15241da177e4SLinus Torvalds he_dev->irq_peak = 0; 15251da177e4SLinus Torvalds he_dev->rbrq_peak = 0; 15261da177e4SLinus Torvalds he_dev->rbpl_peak = 0; 15271da177e4SLinus Torvalds he_dev->tbrq_peak = 0; 15281da177e4SLinus Torvalds 15291da177e4SLinus Torvalds HPRINTK("hell bent for leather!\n"); 15301da177e4SLinus Torvalds 15311da177e4SLinus Torvalds return 0; 15321da177e4SLinus Torvalds } 15331da177e4SLinus Torvalds 15341da177e4SLinus Torvalds static void 15351da177e4SLinus Torvalds he_stop(struct he_dev *he_dev) 15361da177e4SLinus Torvalds { 15371da177e4SLinus Torvalds u16 command; 15381da177e4SLinus Torvalds u32 gen_cntl_0, reg; 15391da177e4SLinus Torvalds struct pci_dev *pci_dev; 15401da177e4SLinus Torvalds 15411da177e4SLinus Torvalds pci_dev = he_dev->pci_dev; 15421da177e4SLinus Torvalds 15431da177e4SLinus Torvalds /* disable interrupts */ 15441da177e4SLinus Torvalds 15451da177e4SLinus Torvalds if (he_dev->membase) { 15461da177e4SLinus Torvalds pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0); 15471da177e4SLinus Torvalds gen_cntl_0 &= ~(INT_PROC_ENBL | INIT_ENB); 15481da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 15491da177e4SLinus Torvalds 15501da177e4SLinus Torvalds tasklet_disable(&he_dev->tasklet); 15511da177e4SLinus Torvalds 15521da177e4SLinus Torvalds /* disable recv and transmit */ 15531da177e4SLinus Torvalds 15541da177e4SLinus Torvalds reg = he_readl_mbox(he_dev, CS_ERCTL0); 15551da177e4SLinus Torvalds reg &= ~(TX_ENABLE|ER_ENABLE); 15561da177e4SLinus Torvalds he_writel_mbox(he_dev, reg, CS_ERCTL0); 15571da177e4SLinus Torvalds 15581da177e4SLinus Torvalds reg = he_readl(he_dev, RC_CONFIG); 15591da177e4SLinus Torvalds reg &= ~(RX_ENABLE); 15601da177e4SLinus Torvalds he_writel(he_dev, reg, RC_CONFIG); 15611da177e4SLinus Torvalds } 15621da177e4SLinus Torvalds 15631da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 15641da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->stop) 15651da177e4SLinus Torvalds he_dev->atm_dev->phy->stop(he_dev->atm_dev); 15661da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 15671da177e4SLinus Torvalds 15681da177e4SLinus Torvalds if (he_dev->irq) 15691da177e4SLinus Torvalds free_irq(he_dev->irq, he_dev); 15701da177e4SLinus Torvalds 15711da177e4SLinus Torvalds if (he_dev->irq_base) 15721da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, (CONFIG_IRQ_SIZE+1) 15731da177e4SLinus Torvalds * sizeof(struct he_irq), he_dev->irq_base, he_dev->irq_phys); 15741da177e4SLinus Torvalds 15751da177e4SLinus Torvalds if (he_dev->hsp) 15761da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, sizeof(struct he_hsp), 15771da177e4SLinus Torvalds he_dev->hsp, he_dev->hsp_phys); 15781da177e4SLinus Torvalds 15791da177e4SLinus Torvalds if (he_dev->rbpl_base) { 15807d1f8db4SJorge Boncompte int i; 15817d1f8db4SJorge Boncompte 15821da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPL_SIZE; ++i) { 15831da177e4SLinus Torvalds void *cpuaddr = he_dev->rbpl_virt[i].virt; 15841da177e4SLinus Torvalds dma_addr_t dma_handle = he_dev->rbpl_base[i].phys; 15851da177e4SLinus Torvalds 15861da177e4SLinus Torvalds pci_pool_free(he_dev->rbpl_pool, cpuaddr, dma_handle); 15871da177e4SLinus Torvalds } 15881da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBPL_SIZE 15891da177e4SLinus Torvalds * sizeof(struct he_rbp), he_dev->rbpl_base, he_dev->rbpl_phys); 15901da177e4SLinus Torvalds } 15911da177e4SLinus Torvalds 15921da177e4SLinus Torvalds if (he_dev->rbpl_pool) 15931da177e4SLinus Torvalds pci_pool_destroy(he_dev->rbpl_pool); 15941da177e4SLinus Torvalds 15951da177e4SLinus Torvalds if (he_dev->rbps_base) { 15967d1f8db4SJorge Boncompte int i; 15977d1f8db4SJorge Boncompte 15981da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPS_SIZE; ++i) { 15991da177e4SLinus Torvalds void *cpuaddr = he_dev->rbps_virt[i].virt; 16001da177e4SLinus Torvalds dma_addr_t dma_handle = he_dev->rbps_base[i].phys; 16011da177e4SLinus Torvalds 16021da177e4SLinus Torvalds pci_pool_free(he_dev->rbps_pool, cpuaddr, dma_handle); 16031da177e4SLinus Torvalds } 16041da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBPS_SIZE 16051da177e4SLinus Torvalds * sizeof(struct he_rbp), he_dev->rbps_base, he_dev->rbps_phys); 16061da177e4SLinus Torvalds } 16071da177e4SLinus Torvalds 16081da177e4SLinus Torvalds if (he_dev->rbps_pool) 16091da177e4SLinus Torvalds pci_pool_destroy(he_dev->rbps_pool); 16101da177e4SLinus Torvalds 16111da177e4SLinus Torvalds if (he_dev->rbrq_base) 16121da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq), 16131da177e4SLinus Torvalds he_dev->rbrq_base, he_dev->rbrq_phys); 16141da177e4SLinus Torvalds 16151da177e4SLinus Torvalds if (he_dev->tbrq_base) 16161da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), 16171da177e4SLinus Torvalds he_dev->tbrq_base, he_dev->tbrq_phys); 16181da177e4SLinus Torvalds 16191da177e4SLinus Torvalds if (he_dev->tpdrq_base) 16201da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), 16211da177e4SLinus Torvalds he_dev->tpdrq_base, he_dev->tpdrq_phys); 16221da177e4SLinus Torvalds 16231da177e4SLinus Torvalds if (he_dev->tpd_pool) 16241da177e4SLinus Torvalds pci_pool_destroy(he_dev->tpd_pool); 16251da177e4SLinus Torvalds 16261da177e4SLinus Torvalds if (he_dev->pci_dev) { 16271da177e4SLinus Torvalds pci_read_config_word(he_dev->pci_dev, PCI_COMMAND, &command); 16281da177e4SLinus Torvalds command &= ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); 16291da177e4SLinus Torvalds pci_write_config_word(he_dev->pci_dev, PCI_COMMAND, command); 16301da177e4SLinus Torvalds } 16311da177e4SLinus Torvalds 16321da177e4SLinus Torvalds if (he_dev->membase) 16331da177e4SLinus Torvalds iounmap(he_dev->membase); 16341da177e4SLinus Torvalds } 16351da177e4SLinus Torvalds 16361da177e4SLinus Torvalds static struct he_tpd * 16371da177e4SLinus Torvalds __alloc_tpd(struct he_dev *he_dev) 16381da177e4SLinus Torvalds { 16391da177e4SLinus Torvalds struct he_tpd *tpd; 16401da177e4SLinus Torvalds dma_addr_t dma_handle; 16411da177e4SLinus Torvalds 1642441e143eSChristoph Lameter tpd = pci_pool_alloc(he_dev->tpd_pool, GFP_ATOMIC|GFP_DMA, &dma_handle); 16431da177e4SLinus Torvalds if (tpd == NULL) 16441da177e4SLinus Torvalds return NULL; 16451da177e4SLinus Torvalds 16461da177e4SLinus Torvalds tpd->status = TPD_ADDR(dma_handle); 16471da177e4SLinus Torvalds tpd->reserved = 0; 16481da177e4SLinus Torvalds tpd->iovec[0].addr = 0; tpd->iovec[0].len = 0; 16491da177e4SLinus Torvalds tpd->iovec[1].addr = 0; tpd->iovec[1].len = 0; 16501da177e4SLinus Torvalds tpd->iovec[2].addr = 0; tpd->iovec[2].len = 0; 16511da177e4SLinus Torvalds 16521da177e4SLinus Torvalds return tpd; 16531da177e4SLinus Torvalds } 16541da177e4SLinus Torvalds 16551da177e4SLinus Torvalds #define AAL5_LEN(buf,len) \ 16561da177e4SLinus Torvalds ((((unsigned char *)(buf))[(len)-6] << 8) | \ 16571da177e4SLinus Torvalds (((unsigned char *)(buf))[(len)-5])) 16581da177e4SLinus Torvalds 16591da177e4SLinus Torvalds /* 2.10.1.2 receive 16601da177e4SLinus Torvalds * 16611da177e4SLinus Torvalds * aal5 packets can optionally return the tcp checksum in the lower 16621da177e4SLinus Torvalds * 16 bits of the crc (RSR0_TCP_CKSUM) 16631da177e4SLinus Torvalds */ 16641da177e4SLinus Torvalds 16651da177e4SLinus Torvalds #define TCP_CKSUM(buf,len) \ 16661da177e4SLinus Torvalds ((((unsigned char *)(buf))[(len)-2] << 8) | \ 16671da177e4SLinus Torvalds (((unsigned char *)(buf))[(len-1)])) 16681da177e4SLinus Torvalds 16691da177e4SLinus Torvalds static int 16701da177e4SLinus Torvalds he_service_rbrq(struct he_dev *he_dev, int group) 16711da177e4SLinus Torvalds { 16721da177e4SLinus Torvalds struct he_rbrq *rbrq_tail = (struct he_rbrq *) 16731da177e4SLinus Torvalds ((unsigned long)he_dev->rbrq_base | 16741da177e4SLinus Torvalds he_dev->hsp->group[group].rbrq_tail); 16751da177e4SLinus Torvalds struct he_rbp *rbp = NULL; 16761da177e4SLinus Torvalds unsigned cid, lastcid = -1; 16771da177e4SLinus Torvalds unsigned buf_len = 0; 16781da177e4SLinus Torvalds struct sk_buff *skb; 16791da177e4SLinus Torvalds struct atm_vcc *vcc = NULL; 16801da177e4SLinus Torvalds struct he_vcc *he_vcc; 16811da177e4SLinus Torvalds struct he_iovec *iov; 16821da177e4SLinus Torvalds int pdus_assembled = 0; 16831da177e4SLinus Torvalds int updated = 0; 16841da177e4SLinus Torvalds 16851da177e4SLinus Torvalds read_lock(&vcc_sklist_lock); 16861da177e4SLinus Torvalds while (he_dev->rbrq_head != rbrq_tail) { 16871da177e4SLinus Torvalds ++updated; 16881da177e4SLinus Torvalds 16891da177e4SLinus Torvalds HPRINTK("%p rbrq%d 0x%x len=%d cid=0x%x %s%s%s%s%s%s\n", 16901da177e4SLinus Torvalds he_dev->rbrq_head, group, 16911da177e4SLinus Torvalds RBRQ_ADDR(he_dev->rbrq_head), 16921da177e4SLinus Torvalds RBRQ_BUFLEN(he_dev->rbrq_head), 16931da177e4SLinus Torvalds RBRQ_CID(he_dev->rbrq_head), 16941da177e4SLinus Torvalds RBRQ_CRC_ERR(he_dev->rbrq_head) ? " CRC_ERR" : "", 16951da177e4SLinus Torvalds RBRQ_LEN_ERR(he_dev->rbrq_head) ? " LEN_ERR" : "", 16961da177e4SLinus Torvalds RBRQ_END_PDU(he_dev->rbrq_head) ? " END_PDU" : "", 16971da177e4SLinus Torvalds RBRQ_AAL5_PROT(he_dev->rbrq_head) ? " AAL5_PROT" : "", 16981da177e4SLinus Torvalds RBRQ_CON_CLOSED(he_dev->rbrq_head) ? " CON_CLOSED" : "", 16991da177e4SLinus Torvalds RBRQ_HBUF_ERR(he_dev->rbrq_head) ? " HBUF_ERR" : ""); 17001da177e4SLinus Torvalds 17011da177e4SLinus Torvalds if (RBRQ_ADDR(he_dev->rbrq_head) & RBP_SMALLBUF) 17021da177e4SLinus Torvalds rbp = &he_dev->rbps_base[RBP_INDEX(RBRQ_ADDR(he_dev->rbrq_head))]; 17031da177e4SLinus Torvalds else 17041da177e4SLinus Torvalds rbp = &he_dev->rbpl_base[RBP_INDEX(RBRQ_ADDR(he_dev->rbrq_head))]; 17051da177e4SLinus Torvalds 17061da177e4SLinus Torvalds buf_len = RBRQ_BUFLEN(he_dev->rbrq_head) * 4; 17071da177e4SLinus Torvalds cid = RBRQ_CID(he_dev->rbrq_head); 17081da177e4SLinus Torvalds 17091da177e4SLinus Torvalds if (cid != lastcid) 17101da177e4SLinus Torvalds vcc = __find_vcc(he_dev, cid); 17111da177e4SLinus Torvalds lastcid = cid; 17121da177e4SLinus Torvalds 17131da177e4SLinus Torvalds if (vcc == NULL) { 17141da177e4SLinus Torvalds hprintk("vcc == NULL (cid 0x%x)\n", cid); 17151da177e4SLinus Torvalds if (!RBRQ_HBUF_ERR(he_dev->rbrq_head)) 17161da177e4SLinus Torvalds rbp->status &= ~RBP_LOANED; 17171da177e4SLinus Torvalds 17181da177e4SLinus Torvalds goto next_rbrq_entry; 17191da177e4SLinus Torvalds } 17201da177e4SLinus Torvalds 17211da177e4SLinus Torvalds he_vcc = HE_VCC(vcc); 17221da177e4SLinus Torvalds if (he_vcc == NULL) { 17231da177e4SLinus Torvalds hprintk("he_vcc == NULL (cid 0x%x)\n", cid); 17241da177e4SLinus Torvalds if (!RBRQ_HBUF_ERR(he_dev->rbrq_head)) 17251da177e4SLinus Torvalds rbp->status &= ~RBP_LOANED; 17261da177e4SLinus Torvalds goto next_rbrq_entry; 17271da177e4SLinus Torvalds } 17281da177e4SLinus Torvalds 17291da177e4SLinus Torvalds if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) { 17301da177e4SLinus Torvalds hprintk("HBUF_ERR! (cid 0x%x)\n", cid); 17311da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 17321da177e4SLinus Torvalds goto return_host_buffers; 17331da177e4SLinus Torvalds } 17341da177e4SLinus Torvalds 17351da177e4SLinus Torvalds he_vcc->iov_tail->iov_base = RBRQ_ADDR(he_dev->rbrq_head); 17361da177e4SLinus Torvalds he_vcc->iov_tail->iov_len = buf_len; 17371da177e4SLinus Torvalds he_vcc->pdu_len += buf_len; 17381da177e4SLinus Torvalds ++he_vcc->iov_tail; 17391da177e4SLinus Torvalds 17401da177e4SLinus Torvalds if (RBRQ_CON_CLOSED(he_dev->rbrq_head)) { 17411da177e4SLinus Torvalds lastcid = -1; 17421da177e4SLinus Torvalds HPRINTK("wake_up rx_waitq (cid 0x%x)\n", cid); 17431da177e4SLinus Torvalds wake_up(&he_vcc->rx_waitq); 17441da177e4SLinus Torvalds goto return_host_buffers; 17451da177e4SLinus Torvalds } 17461da177e4SLinus Torvalds 17471da177e4SLinus Torvalds #ifdef notdef 17481da177e4SLinus Torvalds if ((he_vcc->iov_tail - he_vcc->iov_head) > HE_MAXIOV) { 17491da177e4SLinus Torvalds hprintk("iovec full! cid 0x%x\n", cid); 17501da177e4SLinus Torvalds goto return_host_buffers; 17511da177e4SLinus Torvalds } 17521da177e4SLinus Torvalds #endif 17531da177e4SLinus Torvalds if (!RBRQ_END_PDU(he_dev->rbrq_head)) 17541da177e4SLinus Torvalds goto next_rbrq_entry; 17551da177e4SLinus Torvalds 17561da177e4SLinus Torvalds if (RBRQ_LEN_ERR(he_dev->rbrq_head) 17571da177e4SLinus Torvalds || RBRQ_CRC_ERR(he_dev->rbrq_head)) { 17581da177e4SLinus Torvalds HPRINTK("%s%s (%d.%d)\n", 17591da177e4SLinus Torvalds RBRQ_CRC_ERR(he_dev->rbrq_head) 17601da177e4SLinus Torvalds ? "CRC_ERR " : "", 17611da177e4SLinus Torvalds RBRQ_LEN_ERR(he_dev->rbrq_head) 17621da177e4SLinus Torvalds ? "LEN_ERR" : "", 17631da177e4SLinus Torvalds vcc->vpi, vcc->vci); 17641da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 17651da177e4SLinus Torvalds goto return_host_buffers; 17661da177e4SLinus Torvalds } 17671da177e4SLinus Torvalds 17681da177e4SLinus Torvalds skb = atm_alloc_charge(vcc, he_vcc->pdu_len + rx_skb_reserve, 17691da177e4SLinus Torvalds GFP_ATOMIC); 17701da177e4SLinus Torvalds if (!skb) { 17711da177e4SLinus Torvalds HPRINTK("charge failed (%d.%d)\n", vcc->vpi, vcc->vci); 17721da177e4SLinus Torvalds goto return_host_buffers; 17731da177e4SLinus Torvalds } 17741da177e4SLinus Torvalds 17751da177e4SLinus Torvalds if (rx_skb_reserve > 0) 17761da177e4SLinus Torvalds skb_reserve(skb, rx_skb_reserve); 17771da177e4SLinus Torvalds 1778a61bbcf2SPatrick McHardy __net_timestamp(skb); 17791da177e4SLinus Torvalds 17801da177e4SLinus Torvalds for (iov = he_vcc->iov_head; 17811da177e4SLinus Torvalds iov < he_vcc->iov_tail; ++iov) { 17821da177e4SLinus Torvalds if (iov->iov_base & RBP_SMALLBUF) 17831da177e4SLinus Torvalds memcpy(skb_put(skb, iov->iov_len), 17841da177e4SLinus Torvalds he_dev->rbps_virt[RBP_INDEX(iov->iov_base)].virt, iov->iov_len); 17851da177e4SLinus Torvalds else 17861da177e4SLinus Torvalds memcpy(skb_put(skb, iov->iov_len), 17871da177e4SLinus Torvalds he_dev->rbpl_virt[RBP_INDEX(iov->iov_base)].virt, iov->iov_len); 17881da177e4SLinus Torvalds } 17891da177e4SLinus Torvalds 17901da177e4SLinus Torvalds switch (vcc->qos.aal) { 17911da177e4SLinus Torvalds case ATM_AAL0: 17921da177e4SLinus Torvalds /* 2.10.1.5 raw cell receive */ 17931da177e4SLinus Torvalds skb->len = ATM_AAL0_SDU; 179427a884dcSArnaldo Carvalho de Melo skb_set_tail_pointer(skb, skb->len); 17951da177e4SLinus Torvalds break; 17961da177e4SLinus Torvalds case ATM_AAL5: 17971da177e4SLinus Torvalds /* 2.10.1.2 aal5 receive */ 17981da177e4SLinus Torvalds 17991da177e4SLinus Torvalds skb->len = AAL5_LEN(skb->data, he_vcc->pdu_len); 180027a884dcSArnaldo Carvalho de Melo skb_set_tail_pointer(skb, skb->len); 18011da177e4SLinus Torvalds #ifdef USE_CHECKSUM_HW 18021da177e4SLinus Torvalds if (vcc->vpi == 0 && vcc->vci >= ATM_NOT_RSV_VCI) { 180384fa7933SPatrick McHardy skb->ip_summed = CHECKSUM_COMPLETE; 18041da177e4SLinus Torvalds skb->csum = TCP_CKSUM(skb->data, 18051da177e4SLinus Torvalds he_vcc->pdu_len); 18061da177e4SLinus Torvalds } 18071da177e4SLinus Torvalds #endif 18081da177e4SLinus Torvalds break; 18091da177e4SLinus Torvalds } 18101da177e4SLinus Torvalds 18111da177e4SLinus Torvalds #ifdef should_never_happen 18121da177e4SLinus Torvalds if (skb->len > vcc->qos.rxtp.max_sdu) 18131da177e4SLinus Torvalds hprintk("pdu_len (%d) > vcc->qos.rxtp.max_sdu (%d)! cid 0x%x\n", skb->len, vcc->qos.rxtp.max_sdu, cid); 18141da177e4SLinus Torvalds #endif 18151da177e4SLinus Torvalds 18161da177e4SLinus Torvalds #ifdef notdef 18171da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 18181da177e4SLinus Torvalds #endif 18197f81dc00SChas Williams spin_unlock(&he_dev->global_lock); 18201da177e4SLinus Torvalds vcc->push(vcc, skb); 18217f81dc00SChas Williams spin_lock(&he_dev->global_lock); 18221da177e4SLinus Torvalds 18231da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 18241da177e4SLinus Torvalds 18251da177e4SLinus Torvalds return_host_buffers: 18261da177e4SLinus Torvalds ++pdus_assembled; 18271da177e4SLinus Torvalds 18281da177e4SLinus Torvalds for (iov = he_vcc->iov_head; 18291da177e4SLinus Torvalds iov < he_vcc->iov_tail; ++iov) { 18301da177e4SLinus Torvalds if (iov->iov_base & RBP_SMALLBUF) 18311da177e4SLinus Torvalds rbp = &he_dev->rbps_base[RBP_INDEX(iov->iov_base)]; 18321da177e4SLinus Torvalds else 18331da177e4SLinus Torvalds rbp = &he_dev->rbpl_base[RBP_INDEX(iov->iov_base)]; 18341da177e4SLinus Torvalds 18351da177e4SLinus Torvalds rbp->status &= ~RBP_LOANED; 18361da177e4SLinus Torvalds } 18371da177e4SLinus Torvalds 18381da177e4SLinus Torvalds he_vcc->iov_tail = he_vcc->iov_head; 18391da177e4SLinus Torvalds he_vcc->pdu_len = 0; 18401da177e4SLinus Torvalds 18411da177e4SLinus Torvalds next_rbrq_entry: 18421da177e4SLinus Torvalds he_dev->rbrq_head = (struct he_rbrq *) 18431da177e4SLinus Torvalds ((unsigned long) he_dev->rbrq_base | 18441da177e4SLinus Torvalds RBRQ_MASK(++he_dev->rbrq_head)); 18451da177e4SLinus Torvalds 18461da177e4SLinus Torvalds } 18471da177e4SLinus Torvalds read_unlock(&vcc_sklist_lock); 18481da177e4SLinus Torvalds 18491da177e4SLinus Torvalds if (updated) { 18501da177e4SLinus Torvalds if (updated > he_dev->rbrq_peak) 18511da177e4SLinus Torvalds he_dev->rbrq_peak = updated; 18521da177e4SLinus Torvalds 18531da177e4SLinus Torvalds he_writel(he_dev, RBRQ_MASK(he_dev->rbrq_head), 18541da177e4SLinus Torvalds G0_RBRQ_H + (group * 16)); 18551da177e4SLinus Torvalds } 18561da177e4SLinus Torvalds 18571da177e4SLinus Torvalds return pdus_assembled; 18581da177e4SLinus Torvalds } 18591da177e4SLinus Torvalds 18601da177e4SLinus Torvalds static void 18611da177e4SLinus Torvalds he_service_tbrq(struct he_dev *he_dev, int group) 18621da177e4SLinus Torvalds { 18631da177e4SLinus Torvalds struct he_tbrq *tbrq_tail = (struct he_tbrq *) 18641da177e4SLinus Torvalds ((unsigned long)he_dev->tbrq_base | 18651da177e4SLinus Torvalds he_dev->hsp->group[group].tbrq_tail); 18661da177e4SLinus Torvalds struct he_tpd *tpd; 18671da177e4SLinus Torvalds int slot, updated = 0; 18681da177e4SLinus Torvalds struct he_tpd *__tpd; 18691da177e4SLinus Torvalds 18701da177e4SLinus Torvalds /* 2.1.6 transmit buffer return queue */ 18711da177e4SLinus Torvalds 18721da177e4SLinus Torvalds while (he_dev->tbrq_head != tbrq_tail) { 18731da177e4SLinus Torvalds ++updated; 18741da177e4SLinus Torvalds 18751da177e4SLinus Torvalds HPRINTK("tbrq%d 0x%x%s%s\n", 18761da177e4SLinus Torvalds group, 18771da177e4SLinus Torvalds TBRQ_TPD(he_dev->tbrq_head), 18781da177e4SLinus Torvalds TBRQ_EOS(he_dev->tbrq_head) ? " EOS" : "", 18791da177e4SLinus Torvalds TBRQ_MULTIPLE(he_dev->tbrq_head) ? " MULTIPLE" : ""); 18801da177e4SLinus Torvalds tpd = NULL; 18811da177e4SLinus Torvalds list_for_each_entry(__tpd, &he_dev->outstanding_tpds, entry) { 18821da177e4SLinus Torvalds if (TPD_ADDR(__tpd->status) == TBRQ_TPD(he_dev->tbrq_head)) { 18831da177e4SLinus Torvalds tpd = __tpd; 18841da177e4SLinus Torvalds list_del(&__tpd->entry); 18851da177e4SLinus Torvalds break; 18861da177e4SLinus Torvalds } 18871da177e4SLinus Torvalds } 18881da177e4SLinus Torvalds 18891da177e4SLinus Torvalds if (tpd == NULL) { 18901da177e4SLinus Torvalds hprintk("unable to locate tpd for dma buffer %x\n", 18911da177e4SLinus Torvalds TBRQ_TPD(he_dev->tbrq_head)); 18921da177e4SLinus Torvalds goto next_tbrq_entry; 18931da177e4SLinus Torvalds } 18941da177e4SLinus Torvalds 18951da177e4SLinus Torvalds if (TBRQ_EOS(he_dev->tbrq_head)) { 18961da177e4SLinus Torvalds HPRINTK("wake_up(tx_waitq) cid 0x%x\n", 18971da177e4SLinus Torvalds he_mkcid(he_dev, tpd->vcc->vpi, tpd->vcc->vci)); 18981da177e4SLinus Torvalds if (tpd->vcc) 18991da177e4SLinus Torvalds wake_up(&HE_VCC(tpd->vcc)->tx_waitq); 19001da177e4SLinus Torvalds 19011da177e4SLinus Torvalds goto next_tbrq_entry; 19021da177e4SLinus Torvalds } 19031da177e4SLinus Torvalds 19041da177e4SLinus Torvalds for (slot = 0; slot < TPD_MAXIOV; ++slot) { 19051da177e4SLinus Torvalds if (tpd->iovec[slot].addr) 19061da177e4SLinus Torvalds pci_unmap_single(he_dev->pci_dev, 19071da177e4SLinus Torvalds tpd->iovec[slot].addr, 19081da177e4SLinus Torvalds tpd->iovec[slot].len & TPD_LEN_MASK, 19091da177e4SLinus Torvalds PCI_DMA_TODEVICE); 19101da177e4SLinus Torvalds if (tpd->iovec[slot].len & TPD_LST) 19111da177e4SLinus Torvalds break; 19121da177e4SLinus Torvalds 19131da177e4SLinus Torvalds } 19141da177e4SLinus Torvalds 19151da177e4SLinus Torvalds if (tpd->skb) { /* && !TBRQ_MULTIPLE(he_dev->tbrq_head) */ 19161da177e4SLinus Torvalds if (tpd->vcc && tpd->vcc->pop) 19171da177e4SLinus Torvalds tpd->vcc->pop(tpd->vcc, tpd->skb); 19181da177e4SLinus Torvalds else 19191da177e4SLinus Torvalds dev_kfree_skb_any(tpd->skb); 19201da177e4SLinus Torvalds } 19211da177e4SLinus Torvalds 19221da177e4SLinus Torvalds next_tbrq_entry: 19231da177e4SLinus Torvalds if (tpd) 19241da177e4SLinus Torvalds pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); 19251da177e4SLinus Torvalds he_dev->tbrq_head = (struct he_tbrq *) 19261da177e4SLinus Torvalds ((unsigned long) he_dev->tbrq_base | 19271da177e4SLinus Torvalds TBRQ_MASK(++he_dev->tbrq_head)); 19281da177e4SLinus Torvalds } 19291da177e4SLinus Torvalds 19301da177e4SLinus Torvalds if (updated) { 19311da177e4SLinus Torvalds if (updated > he_dev->tbrq_peak) 19321da177e4SLinus Torvalds he_dev->tbrq_peak = updated; 19331da177e4SLinus Torvalds 19341da177e4SLinus Torvalds he_writel(he_dev, TBRQ_MASK(he_dev->tbrq_head), 19351da177e4SLinus Torvalds G0_TBRQ_H + (group * 16)); 19361da177e4SLinus Torvalds } 19371da177e4SLinus Torvalds } 19381da177e4SLinus Torvalds 19391da177e4SLinus Torvalds 19401da177e4SLinus Torvalds static void 19411da177e4SLinus Torvalds he_service_rbpl(struct he_dev *he_dev, int group) 19421da177e4SLinus Torvalds { 19431da177e4SLinus Torvalds struct he_rbp *newtail; 19441da177e4SLinus Torvalds struct he_rbp *rbpl_head; 19451da177e4SLinus Torvalds int moved = 0; 19461da177e4SLinus Torvalds 19471da177e4SLinus Torvalds rbpl_head = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base | 19481da177e4SLinus Torvalds RBPL_MASK(he_readl(he_dev, G0_RBPL_S))); 19491da177e4SLinus Torvalds 19501da177e4SLinus Torvalds for (;;) { 19511da177e4SLinus Torvalds newtail = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base | 19521da177e4SLinus Torvalds RBPL_MASK(he_dev->rbpl_tail+1)); 19531da177e4SLinus Torvalds 19541da177e4SLinus Torvalds /* table 3.42 -- rbpl_tail should never be set to rbpl_head */ 19551da177e4SLinus Torvalds if ((newtail == rbpl_head) || (newtail->status & RBP_LOANED)) 19561da177e4SLinus Torvalds break; 19571da177e4SLinus Torvalds 19581da177e4SLinus Torvalds newtail->status |= RBP_LOANED; 19591da177e4SLinus Torvalds he_dev->rbpl_tail = newtail; 19601da177e4SLinus Torvalds ++moved; 19611da177e4SLinus Torvalds } 19621da177e4SLinus Torvalds 19631da177e4SLinus Torvalds if (moved) 19641da177e4SLinus Torvalds he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail), G0_RBPL_T); 19651da177e4SLinus Torvalds } 19661da177e4SLinus Torvalds 19671da177e4SLinus Torvalds static void 19681da177e4SLinus Torvalds he_service_rbps(struct he_dev *he_dev, int group) 19691da177e4SLinus Torvalds { 19701da177e4SLinus Torvalds struct he_rbp *newtail; 19711da177e4SLinus Torvalds struct he_rbp *rbps_head; 19721da177e4SLinus Torvalds int moved = 0; 19731da177e4SLinus Torvalds 19741da177e4SLinus Torvalds rbps_head = (struct he_rbp *) ((unsigned long)he_dev->rbps_base | 19751da177e4SLinus Torvalds RBPS_MASK(he_readl(he_dev, G0_RBPS_S))); 19761da177e4SLinus Torvalds 19771da177e4SLinus Torvalds for (;;) { 19781da177e4SLinus Torvalds newtail = (struct he_rbp *) ((unsigned long)he_dev->rbps_base | 19791da177e4SLinus Torvalds RBPS_MASK(he_dev->rbps_tail+1)); 19801da177e4SLinus Torvalds 19811da177e4SLinus Torvalds /* table 3.42 -- rbps_tail should never be set to rbps_head */ 19821da177e4SLinus Torvalds if ((newtail == rbps_head) || (newtail->status & RBP_LOANED)) 19831da177e4SLinus Torvalds break; 19841da177e4SLinus Torvalds 19851da177e4SLinus Torvalds newtail->status |= RBP_LOANED; 19861da177e4SLinus Torvalds he_dev->rbps_tail = newtail; 19871da177e4SLinus Torvalds ++moved; 19881da177e4SLinus Torvalds } 19891da177e4SLinus Torvalds 19901da177e4SLinus Torvalds if (moved) 19911da177e4SLinus Torvalds he_writel(he_dev, RBPS_MASK(he_dev->rbps_tail), G0_RBPS_T); 19921da177e4SLinus Torvalds } 19931da177e4SLinus Torvalds 19941da177e4SLinus Torvalds static void 19951da177e4SLinus Torvalds he_tasklet(unsigned long data) 19961da177e4SLinus Torvalds { 19971da177e4SLinus Torvalds unsigned long flags; 19981da177e4SLinus Torvalds struct he_dev *he_dev = (struct he_dev *) data; 19991da177e4SLinus Torvalds int group, type; 20001da177e4SLinus Torvalds int updated = 0; 20011da177e4SLinus Torvalds 20021da177e4SLinus Torvalds HPRINTK("tasklet (0x%lx)\n", data); 20031da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 20041da177e4SLinus Torvalds 20051da177e4SLinus Torvalds while (he_dev->irq_head != he_dev->irq_tail) { 20061da177e4SLinus Torvalds ++updated; 20071da177e4SLinus Torvalds 20081da177e4SLinus Torvalds type = ITYPE_TYPE(he_dev->irq_head->isw); 20091da177e4SLinus Torvalds group = ITYPE_GROUP(he_dev->irq_head->isw); 20101da177e4SLinus Torvalds 20111da177e4SLinus Torvalds switch (type) { 20121da177e4SLinus Torvalds case ITYPE_RBRQ_THRESH: 20131da177e4SLinus Torvalds HPRINTK("rbrq%d threshold\n", group); 20141da177e4SLinus Torvalds /* fall through */ 20151da177e4SLinus Torvalds case ITYPE_RBRQ_TIMER: 20161da177e4SLinus Torvalds if (he_service_rbrq(he_dev, group)) { 20171da177e4SLinus Torvalds he_service_rbpl(he_dev, group); 20181da177e4SLinus Torvalds he_service_rbps(he_dev, group); 20191da177e4SLinus Torvalds } 20201da177e4SLinus Torvalds break; 20211da177e4SLinus Torvalds case ITYPE_TBRQ_THRESH: 20221da177e4SLinus Torvalds HPRINTK("tbrq%d threshold\n", group); 20231da177e4SLinus Torvalds /* fall through */ 20241da177e4SLinus Torvalds case ITYPE_TPD_COMPLETE: 20251da177e4SLinus Torvalds he_service_tbrq(he_dev, group); 20261da177e4SLinus Torvalds break; 20271da177e4SLinus Torvalds case ITYPE_RBPL_THRESH: 20281da177e4SLinus Torvalds he_service_rbpl(he_dev, group); 20291da177e4SLinus Torvalds break; 20301da177e4SLinus Torvalds case ITYPE_RBPS_THRESH: 20311da177e4SLinus Torvalds he_service_rbps(he_dev, group); 20321da177e4SLinus Torvalds break; 20331da177e4SLinus Torvalds case ITYPE_PHY: 20341da177e4SLinus Torvalds HPRINTK("phy interrupt\n"); 20351da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 20361da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 20371da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->interrupt) 20381da177e4SLinus Torvalds he_dev->atm_dev->phy->interrupt(he_dev->atm_dev); 20391da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 20401da177e4SLinus Torvalds #endif 20411da177e4SLinus Torvalds break; 20421da177e4SLinus Torvalds case ITYPE_OTHER: 20431da177e4SLinus Torvalds switch (type|group) { 20441da177e4SLinus Torvalds case ITYPE_PARITY: 20451da177e4SLinus Torvalds hprintk("parity error\n"); 20461da177e4SLinus Torvalds break; 20471da177e4SLinus Torvalds case ITYPE_ABORT: 20481da177e4SLinus Torvalds hprintk("abort 0x%x\n", he_readl(he_dev, ABORT_ADDR)); 20491da177e4SLinus Torvalds break; 20501da177e4SLinus Torvalds } 20511da177e4SLinus Torvalds break; 20521da177e4SLinus Torvalds case ITYPE_TYPE(ITYPE_INVALID): 20531da177e4SLinus Torvalds /* see 8.1.1 -- check all queues */ 20541da177e4SLinus Torvalds 20551da177e4SLinus Torvalds HPRINTK("isw not updated 0x%x\n", he_dev->irq_head->isw); 20561da177e4SLinus Torvalds 20571da177e4SLinus Torvalds he_service_rbrq(he_dev, 0); 20581da177e4SLinus Torvalds he_service_rbpl(he_dev, 0); 20591da177e4SLinus Torvalds he_service_rbps(he_dev, 0); 20601da177e4SLinus Torvalds he_service_tbrq(he_dev, 0); 20611da177e4SLinus Torvalds break; 20621da177e4SLinus Torvalds default: 20631da177e4SLinus Torvalds hprintk("bad isw 0x%x?\n", he_dev->irq_head->isw); 20641da177e4SLinus Torvalds } 20651da177e4SLinus Torvalds 20661da177e4SLinus Torvalds he_dev->irq_head->isw = ITYPE_INVALID; 20671da177e4SLinus Torvalds 20681da177e4SLinus Torvalds he_dev->irq_head = (struct he_irq *) NEXT_ENTRY(he_dev->irq_base, he_dev->irq_head, IRQ_MASK); 20691da177e4SLinus Torvalds } 20701da177e4SLinus Torvalds 20711da177e4SLinus Torvalds if (updated) { 20721da177e4SLinus Torvalds if (updated > he_dev->irq_peak) 20731da177e4SLinus Torvalds he_dev->irq_peak = updated; 20741da177e4SLinus Torvalds 20751da177e4SLinus Torvalds he_writel(he_dev, 20761da177e4SLinus Torvalds IRQ_SIZE(CONFIG_IRQ_SIZE) | 20771da177e4SLinus Torvalds IRQ_THRESH(CONFIG_IRQ_THRESH) | 20781da177e4SLinus Torvalds IRQ_TAIL(he_dev->irq_tail), IRQ0_HEAD); 20791da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata; flush posted writes */ 20801da177e4SLinus Torvalds } 20811da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 20821da177e4SLinus Torvalds } 20831da177e4SLinus Torvalds 20841da177e4SLinus Torvalds static irqreturn_t 20857d12e780SDavid Howells he_irq_handler(int irq, void *dev_id) 20861da177e4SLinus Torvalds { 20871da177e4SLinus Torvalds unsigned long flags; 20881da177e4SLinus Torvalds struct he_dev *he_dev = (struct he_dev * )dev_id; 20891da177e4SLinus Torvalds int handled = 0; 20901da177e4SLinus Torvalds 20911da177e4SLinus Torvalds if (he_dev == NULL) 20921da177e4SLinus Torvalds return IRQ_NONE; 20931da177e4SLinus Torvalds 20941da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 20951da177e4SLinus Torvalds 20961da177e4SLinus Torvalds he_dev->irq_tail = (struct he_irq *) (((unsigned long)he_dev->irq_base) | 20971da177e4SLinus Torvalds (*he_dev->irq_tailoffset << 2)); 20981da177e4SLinus Torvalds 20991da177e4SLinus Torvalds if (he_dev->irq_tail == he_dev->irq_head) { 21001da177e4SLinus Torvalds HPRINTK("tailoffset not updated?\n"); 21011da177e4SLinus Torvalds he_dev->irq_tail = (struct he_irq *) ((unsigned long)he_dev->irq_base | 21021da177e4SLinus Torvalds ((he_readl(he_dev, IRQ0_BASE) & IRQ_MASK) << 2)); 21031da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata */ 21041da177e4SLinus Torvalds } 21051da177e4SLinus Torvalds 21061da177e4SLinus Torvalds #ifdef DEBUG 21071da177e4SLinus Torvalds if (he_dev->irq_head == he_dev->irq_tail /* && !IRQ_PENDING */) 21081da177e4SLinus Torvalds hprintk("spurious (or shared) interrupt?\n"); 21091da177e4SLinus Torvalds #endif 21101da177e4SLinus Torvalds 21111da177e4SLinus Torvalds if (he_dev->irq_head != he_dev->irq_tail) { 21121da177e4SLinus Torvalds handled = 1; 21131da177e4SLinus Torvalds tasklet_schedule(&he_dev->tasklet); 21141da177e4SLinus Torvalds he_writel(he_dev, INT_CLEAR_A, INT_FIFO); /* clear interrupt */ 21151da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* flush posted writes */ 21161da177e4SLinus Torvalds } 21171da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 21181da177e4SLinus Torvalds return IRQ_RETVAL(handled); 21191da177e4SLinus Torvalds 21201da177e4SLinus Torvalds } 21211da177e4SLinus Torvalds 21221da177e4SLinus Torvalds static __inline__ void 21231da177e4SLinus Torvalds __enqueue_tpd(struct he_dev *he_dev, struct he_tpd *tpd, unsigned cid) 21241da177e4SLinus Torvalds { 21251da177e4SLinus Torvalds struct he_tpdrq *new_tail; 21261da177e4SLinus Torvalds 21271da177e4SLinus Torvalds HPRINTK("tpdrq %p cid 0x%x -> tpdrq_tail %p\n", 21281da177e4SLinus Torvalds tpd, cid, he_dev->tpdrq_tail); 21291da177e4SLinus Torvalds 21301da177e4SLinus Torvalds /* new_tail = he_dev->tpdrq_tail; */ 21311da177e4SLinus Torvalds new_tail = (struct he_tpdrq *) ((unsigned long) he_dev->tpdrq_base | 21321da177e4SLinus Torvalds TPDRQ_MASK(he_dev->tpdrq_tail+1)); 21331da177e4SLinus Torvalds 21341da177e4SLinus Torvalds /* 21351da177e4SLinus Torvalds * check to see if we are about to set the tail == head 21361da177e4SLinus Torvalds * if true, update the head pointer from the adapter 21371da177e4SLinus Torvalds * to see if this is really the case (reading the queue 21381da177e4SLinus Torvalds * head for every enqueue would be unnecessarily slow) 21391da177e4SLinus Torvalds */ 21401da177e4SLinus Torvalds 21411da177e4SLinus Torvalds if (new_tail == he_dev->tpdrq_head) { 21421da177e4SLinus Torvalds he_dev->tpdrq_head = (struct he_tpdrq *) 21431da177e4SLinus Torvalds (((unsigned long)he_dev->tpdrq_base) | 21441da177e4SLinus Torvalds TPDRQ_MASK(he_readl(he_dev, TPDRQ_B_H))); 21451da177e4SLinus Torvalds 21461da177e4SLinus Torvalds if (new_tail == he_dev->tpdrq_head) { 2147d730e103SChas Williams int slot; 2148d730e103SChas Williams 21491da177e4SLinus Torvalds hprintk("tpdrq full (cid 0x%x)\n", cid); 21501da177e4SLinus Torvalds /* 21511da177e4SLinus Torvalds * FIXME 21521da177e4SLinus Torvalds * push tpd onto a transmit backlog queue 21531da177e4SLinus Torvalds * after service_tbrq, service the backlog 21541da177e4SLinus Torvalds * for now, we just drop the pdu 21551da177e4SLinus Torvalds */ 2156d730e103SChas Williams for (slot = 0; slot < TPD_MAXIOV; ++slot) { 2157d730e103SChas Williams if (tpd->iovec[slot].addr) 2158d730e103SChas Williams pci_unmap_single(he_dev->pci_dev, 2159d730e103SChas Williams tpd->iovec[slot].addr, 2160d730e103SChas Williams tpd->iovec[slot].len & TPD_LEN_MASK, 2161d730e103SChas Williams PCI_DMA_TODEVICE); 2162d730e103SChas Williams } 21631da177e4SLinus Torvalds if (tpd->skb) { 21641da177e4SLinus Torvalds if (tpd->vcc->pop) 21651da177e4SLinus Torvalds tpd->vcc->pop(tpd->vcc, tpd->skb); 21661da177e4SLinus Torvalds else 21671da177e4SLinus Torvalds dev_kfree_skb_any(tpd->skb); 21681da177e4SLinus Torvalds atomic_inc(&tpd->vcc->stats->tx_err); 21691da177e4SLinus Torvalds } 21701da177e4SLinus Torvalds pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); 21711da177e4SLinus Torvalds return; 21721da177e4SLinus Torvalds } 21731da177e4SLinus Torvalds } 21741da177e4SLinus Torvalds 21751da177e4SLinus Torvalds /* 2.1.5 transmit packet descriptor ready queue */ 21761da177e4SLinus Torvalds list_add_tail(&tpd->entry, &he_dev->outstanding_tpds); 21771da177e4SLinus Torvalds he_dev->tpdrq_tail->tpd = TPD_ADDR(tpd->status); 21781da177e4SLinus Torvalds he_dev->tpdrq_tail->cid = cid; 21791da177e4SLinus Torvalds wmb(); 21801da177e4SLinus Torvalds 21811da177e4SLinus Torvalds he_dev->tpdrq_tail = new_tail; 21821da177e4SLinus Torvalds 21831da177e4SLinus Torvalds he_writel(he_dev, TPDRQ_MASK(he_dev->tpdrq_tail), TPDRQ_T); 21841da177e4SLinus Torvalds (void) he_readl(he_dev, TPDRQ_T); /* flush posted writes */ 21851da177e4SLinus Torvalds } 21861da177e4SLinus Torvalds 21871da177e4SLinus Torvalds static int 21881da177e4SLinus Torvalds he_open(struct atm_vcc *vcc) 21891da177e4SLinus Torvalds { 21901da177e4SLinus Torvalds unsigned long flags; 21911da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 21921da177e4SLinus Torvalds struct he_vcc *he_vcc; 21931da177e4SLinus Torvalds int err = 0; 21941da177e4SLinus Torvalds unsigned cid, rsr0, rsr1, rsr4, tsr0, tsr0_aal, tsr4, period, reg, clock; 21951da177e4SLinus Torvalds short vpi = vcc->vpi; 21961da177e4SLinus Torvalds int vci = vcc->vci; 21971da177e4SLinus Torvalds 21981da177e4SLinus Torvalds if (vci == ATM_VCI_UNSPEC || vpi == ATM_VPI_UNSPEC) 21991da177e4SLinus Torvalds return 0; 22001da177e4SLinus Torvalds 22011da177e4SLinus Torvalds HPRINTK("open vcc %p %d.%d\n", vcc, vpi, vci); 22021da177e4SLinus Torvalds 22031da177e4SLinus Torvalds set_bit(ATM_VF_ADDR, &vcc->flags); 22041da177e4SLinus Torvalds 22051da177e4SLinus Torvalds cid = he_mkcid(he_dev, vpi, vci); 22061da177e4SLinus Torvalds 22075cbded58SRobert P. J. Day he_vcc = kmalloc(sizeof(struct he_vcc), GFP_ATOMIC); 22081da177e4SLinus Torvalds if (he_vcc == NULL) { 22091da177e4SLinus Torvalds hprintk("unable to allocate he_vcc during open\n"); 22101da177e4SLinus Torvalds return -ENOMEM; 22111da177e4SLinus Torvalds } 22121da177e4SLinus Torvalds 22131da177e4SLinus Torvalds he_vcc->iov_tail = he_vcc->iov_head; 22141da177e4SLinus Torvalds he_vcc->pdu_len = 0; 22151da177e4SLinus Torvalds he_vcc->rc_index = -1; 22161da177e4SLinus Torvalds 22171da177e4SLinus Torvalds init_waitqueue_head(&he_vcc->rx_waitq); 22181da177e4SLinus Torvalds init_waitqueue_head(&he_vcc->tx_waitq); 22191da177e4SLinus Torvalds 22201da177e4SLinus Torvalds vcc->dev_data = he_vcc; 22211da177e4SLinus Torvalds 22221da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE) { 22231da177e4SLinus Torvalds int pcr_goal; 22241da177e4SLinus Torvalds 22251da177e4SLinus Torvalds pcr_goal = atm_pcr_goal(&vcc->qos.txtp); 22261da177e4SLinus Torvalds if (pcr_goal == 0) 22271da177e4SLinus Torvalds pcr_goal = he_dev->atm_dev->link_rate; 22281da177e4SLinus Torvalds if (pcr_goal < 0) /* means round down, technically */ 22291da177e4SLinus Torvalds pcr_goal = -pcr_goal; 22301da177e4SLinus Torvalds 22311da177e4SLinus Torvalds HPRINTK("open tx cid 0x%x pcr_goal %d\n", cid, pcr_goal); 22321da177e4SLinus Torvalds 22331da177e4SLinus Torvalds switch (vcc->qos.aal) { 22341da177e4SLinus Torvalds case ATM_AAL5: 22351da177e4SLinus Torvalds tsr0_aal = TSR0_AAL5; 22361da177e4SLinus Torvalds tsr4 = TSR4_AAL5; 22371da177e4SLinus Torvalds break; 22381da177e4SLinus Torvalds case ATM_AAL0: 22391da177e4SLinus Torvalds tsr0_aal = TSR0_AAL0_SDU; 22401da177e4SLinus Torvalds tsr4 = TSR4_AAL0_SDU; 22411da177e4SLinus Torvalds break; 22421da177e4SLinus Torvalds default: 22431da177e4SLinus Torvalds err = -EINVAL; 22441da177e4SLinus Torvalds goto open_failed; 22451da177e4SLinus Torvalds } 22461da177e4SLinus Torvalds 22471da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 22481da177e4SLinus Torvalds tsr0 = he_readl_tsr0(he_dev, cid); 22491da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 22501da177e4SLinus Torvalds 22511da177e4SLinus Torvalds if (TSR0_CONN_STATE(tsr0) != 0) { 22521da177e4SLinus Torvalds hprintk("cid 0x%x not idle (tsr0 = 0x%x)\n", cid, tsr0); 22531da177e4SLinus Torvalds err = -EBUSY; 22541da177e4SLinus Torvalds goto open_failed; 22551da177e4SLinus Torvalds } 22561da177e4SLinus Torvalds 22571da177e4SLinus Torvalds switch (vcc->qos.txtp.traffic_class) { 22581da177e4SLinus Torvalds case ATM_UBR: 22591da177e4SLinus Torvalds /* 2.3.3.1 open connection ubr */ 22601da177e4SLinus Torvalds 22611da177e4SLinus Torvalds tsr0 = TSR0_UBR | TSR0_GROUP(0) | tsr0_aal | 22621da177e4SLinus Torvalds TSR0_USE_WMIN | TSR0_UPDATE_GER; 22631da177e4SLinus Torvalds break; 22641da177e4SLinus Torvalds 22651da177e4SLinus Torvalds case ATM_CBR: 22661da177e4SLinus Torvalds /* 2.3.3.2 open connection cbr */ 22671da177e4SLinus Torvalds 22681da177e4SLinus Torvalds /* 8.2.3 cbr scheduler wrap problem -- limit to 90% total link rate */ 22691da177e4SLinus Torvalds if ((he_dev->total_bw + pcr_goal) 22701da177e4SLinus Torvalds > (he_dev->atm_dev->link_rate * 9 / 10)) 22711da177e4SLinus Torvalds { 22721da177e4SLinus Torvalds err = -EBUSY; 22731da177e4SLinus Torvalds goto open_failed; 22741da177e4SLinus Torvalds } 22751da177e4SLinus Torvalds 22761da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); /* also protects he_dev->cs_stper[] */ 22771da177e4SLinus Torvalds 22781da177e4SLinus Torvalds /* find an unused cs_stper register */ 22791da177e4SLinus Torvalds for (reg = 0; reg < HE_NUM_CS_STPER; ++reg) 22801da177e4SLinus Torvalds if (he_dev->cs_stper[reg].inuse == 0 || 22811da177e4SLinus Torvalds he_dev->cs_stper[reg].pcr == pcr_goal) 22821da177e4SLinus Torvalds break; 22831da177e4SLinus Torvalds 22841da177e4SLinus Torvalds if (reg == HE_NUM_CS_STPER) { 22851da177e4SLinus Torvalds err = -EBUSY; 22861da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 22871da177e4SLinus Torvalds goto open_failed; 22881da177e4SLinus Torvalds } 22891da177e4SLinus Torvalds 22901da177e4SLinus Torvalds he_dev->total_bw += pcr_goal; 22911da177e4SLinus Torvalds 22921da177e4SLinus Torvalds he_vcc->rc_index = reg; 22931da177e4SLinus Torvalds ++he_dev->cs_stper[reg].inuse; 22941da177e4SLinus Torvalds he_dev->cs_stper[reg].pcr = pcr_goal; 22951da177e4SLinus Torvalds 22961da177e4SLinus Torvalds clock = he_is622(he_dev) ? 66667000 : 50000000; 22971da177e4SLinus Torvalds period = clock / pcr_goal; 22981da177e4SLinus Torvalds 22991da177e4SLinus Torvalds HPRINTK("rc_index = %d period = %d\n", 23001da177e4SLinus Torvalds reg, period); 23011da177e4SLinus Torvalds 23021da177e4SLinus Torvalds he_writel_mbox(he_dev, rate_to_atmf(period/2), 23031da177e4SLinus Torvalds CS_STPER0 + reg); 23041da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23051da177e4SLinus Torvalds 23061da177e4SLinus Torvalds tsr0 = TSR0_CBR | TSR0_GROUP(0) | tsr0_aal | 23071da177e4SLinus Torvalds TSR0_RC_INDEX(reg); 23081da177e4SLinus Torvalds 23091da177e4SLinus Torvalds break; 23101da177e4SLinus Torvalds default: 23111da177e4SLinus Torvalds err = -EINVAL; 23121da177e4SLinus Torvalds goto open_failed; 23131da177e4SLinus Torvalds } 23141da177e4SLinus Torvalds 23151da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 23161da177e4SLinus Torvalds 23171da177e4SLinus Torvalds he_writel_tsr0(he_dev, tsr0, cid); 23181da177e4SLinus Torvalds he_writel_tsr4(he_dev, tsr4 | 1, cid); 23191da177e4SLinus Torvalds he_writel_tsr1(he_dev, TSR1_MCR(rate_to_atmf(0)) | 23201da177e4SLinus Torvalds TSR1_PCR(rate_to_atmf(pcr_goal)), cid); 23211da177e4SLinus Torvalds he_writel_tsr2(he_dev, TSR2_ACR(rate_to_atmf(pcr_goal)), cid); 23221da177e4SLinus Torvalds he_writel_tsr9(he_dev, TSR9_OPEN_CONN, cid); 23231da177e4SLinus Torvalds 23241da177e4SLinus Torvalds he_writel_tsr3(he_dev, 0x0, cid); 23251da177e4SLinus Torvalds he_writel_tsr5(he_dev, 0x0, cid); 23261da177e4SLinus Torvalds he_writel_tsr6(he_dev, 0x0, cid); 23271da177e4SLinus Torvalds he_writel_tsr7(he_dev, 0x0, cid); 23281da177e4SLinus Torvalds he_writel_tsr8(he_dev, 0x0, cid); 23291da177e4SLinus Torvalds he_writel_tsr10(he_dev, 0x0, cid); 23301da177e4SLinus Torvalds he_writel_tsr11(he_dev, 0x0, cid); 23311da177e4SLinus Torvalds he_writel_tsr12(he_dev, 0x0, cid); 23321da177e4SLinus Torvalds he_writel_tsr13(he_dev, 0x0, cid); 23331da177e4SLinus Torvalds he_writel_tsr14(he_dev, 0x0, cid); 23341da177e4SLinus Torvalds (void) he_readl_tsr0(he_dev, cid); /* flush posted writes */ 23351da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23361da177e4SLinus Torvalds } 23371da177e4SLinus Torvalds 23381da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 23391da177e4SLinus Torvalds unsigned aal; 23401da177e4SLinus Torvalds 23411da177e4SLinus Torvalds HPRINTK("open rx cid 0x%x (rx_waitq %p)\n", cid, 23421da177e4SLinus Torvalds &HE_VCC(vcc)->rx_waitq); 23431da177e4SLinus Torvalds 23441da177e4SLinus Torvalds switch (vcc->qos.aal) { 23451da177e4SLinus Torvalds case ATM_AAL5: 23461da177e4SLinus Torvalds aal = RSR0_AAL5; 23471da177e4SLinus Torvalds break; 23481da177e4SLinus Torvalds case ATM_AAL0: 23491da177e4SLinus Torvalds aal = RSR0_RAWCELL; 23501da177e4SLinus Torvalds break; 23511da177e4SLinus Torvalds default: 23521da177e4SLinus Torvalds err = -EINVAL; 23531da177e4SLinus Torvalds goto open_failed; 23541da177e4SLinus Torvalds } 23551da177e4SLinus Torvalds 23561da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 23571da177e4SLinus Torvalds 23581da177e4SLinus Torvalds rsr0 = he_readl_rsr0(he_dev, cid); 23591da177e4SLinus Torvalds if (rsr0 & RSR0_OPEN_CONN) { 23601da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23611da177e4SLinus Torvalds 23621da177e4SLinus Torvalds hprintk("cid 0x%x not idle (rsr0 = 0x%x)\n", cid, rsr0); 23631da177e4SLinus Torvalds err = -EBUSY; 23641da177e4SLinus Torvalds goto open_failed; 23651da177e4SLinus Torvalds } 23661da177e4SLinus Torvalds 23671da177e4SLinus Torvalds rsr1 = RSR1_GROUP(0); 23681da177e4SLinus Torvalds rsr4 = RSR4_GROUP(0); 23691da177e4SLinus Torvalds rsr0 = vcc->qos.rxtp.traffic_class == ATM_UBR ? 23701da177e4SLinus Torvalds (RSR0_EPD_ENABLE|RSR0_PPD_ENABLE) : 0; 23711da177e4SLinus Torvalds 23721da177e4SLinus Torvalds #ifdef USE_CHECKSUM_HW 23731da177e4SLinus Torvalds if (vpi == 0 && vci >= ATM_NOT_RSV_VCI) 23741da177e4SLinus Torvalds rsr0 |= RSR0_TCP_CKSUM; 23751da177e4SLinus Torvalds #endif 23761da177e4SLinus Torvalds 23771da177e4SLinus Torvalds he_writel_rsr4(he_dev, rsr4, cid); 23781da177e4SLinus Torvalds he_writel_rsr1(he_dev, rsr1, cid); 23791da177e4SLinus Torvalds /* 5.1.11 last parameter initialized should be 23801da177e4SLinus Torvalds the open/closed indication in rsr0 */ 23811da177e4SLinus Torvalds he_writel_rsr0(he_dev, 23821da177e4SLinus Torvalds rsr0 | RSR0_START_PDU | RSR0_OPEN_CONN | aal, cid); 23831da177e4SLinus Torvalds (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */ 23841da177e4SLinus Torvalds 23851da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23861da177e4SLinus Torvalds } 23871da177e4SLinus Torvalds 23881da177e4SLinus Torvalds open_failed: 23891da177e4SLinus Torvalds 23901da177e4SLinus Torvalds if (err) { 23911da177e4SLinus Torvalds kfree(he_vcc); 23921da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 23931da177e4SLinus Torvalds } 23941da177e4SLinus Torvalds else 23951da177e4SLinus Torvalds set_bit(ATM_VF_READY, &vcc->flags); 23961da177e4SLinus Torvalds 23971da177e4SLinus Torvalds return err; 23981da177e4SLinus Torvalds } 23991da177e4SLinus Torvalds 24001da177e4SLinus Torvalds static void 24011da177e4SLinus Torvalds he_close(struct atm_vcc *vcc) 24021da177e4SLinus Torvalds { 24031da177e4SLinus Torvalds unsigned long flags; 24041da177e4SLinus Torvalds DECLARE_WAITQUEUE(wait, current); 24051da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 24061da177e4SLinus Torvalds struct he_tpd *tpd; 24071da177e4SLinus Torvalds unsigned cid; 24081da177e4SLinus Torvalds struct he_vcc *he_vcc = HE_VCC(vcc); 24091da177e4SLinus Torvalds #define MAX_RETRY 30 24101da177e4SLinus Torvalds int retry = 0, sleep = 1, tx_inuse; 24111da177e4SLinus Torvalds 24121da177e4SLinus Torvalds HPRINTK("close vcc %p %d.%d\n", vcc, vcc->vpi, vcc->vci); 24131da177e4SLinus Torvalds 24141da177e4SLinus Torvalds clear_bit(ATM_VF_READY, &vcc->flags); 24151da177e4SLinus Torvalds cid = he_mkcid(he_dev, vcc->vpi, vcc->vci); 24161da177e4SLinus Torvalds 24171da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 24181da177e4SLinus Torvalds int timeout; 24191da177e4SLinus Torvalds 24201da177e4SLinus Torvalds HPRINTK("close rx cid 0x%x\n", cid); 24211da177e4SLinus Torvalds 24221da177e4SLinus Torvalds /* 2.7.2.2 close receive operation */ 24231da177e4SLinus Torvalds 24241da177e4SLinus Torvalds /* wait for previous close (if any) to finish */ 24251da177e4SLinus Torvalds 24261da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 24271da177e4SLinus Torvalds while (he_readl(he_dev, RCC_STAT) & RCC_BUSY) { 24281da177e4SLinus Torvalds HPRINTK("close cid 0x%x RCC_BUSY\n", cid); 24291da177e4SLinus Torvalds udelay(250); 24301da177e4SLinus Torvalds } 24311da177e4SLinus Torvalds 24321da177e4SLinus Torvalds set_current_state(TASK_UNINTERRUPTIBLE); 24331da177e4SLinus Torvalds add_wait_queue(&he_vcc->rx_waitq, &wait); 24341da177e4SLinus Torvalds 24351da177e4SLinus Torvalds he_writel_rsr0(he_dev, RSR0_CLOSE_CONN, cid); 24361da177e4SLinus Torvalds (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */ 24371da177e4SLinus Torvalds he_writel_mbox(he_dev, cid, RXCON_CLOSE); 24381da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 24391da177e4SLinus Torvalds 24401da177e4SLinus Torvalds timeout = schedule_timeout(30*HZ); 24411da177e4SLinus Torvalds 24421da177e4SLinus Torvalds remove_wait_queue(&he_vcc->rx_waitq, &wait); 24431da177e4SLinus Torvalds set_current_state(TASK_RUNNING); 24441da177e4SLinus Torvalds 24451da177e4SLinus Torvalds if (timeout == 0) 24461da177e4SLinus Torvalds hprintk("close rx timeout cid 0x%x\n", cid); 24471da177e4SLinus Torvalds 24481da177e4SLinus Torvalds HPRINTK("close rx cid 0x%x complete\n", cid); 24491da177e4SLinus Torvalds 24501da177e4SLinus Torvalds } 24511da177e4SLinus Torvalds 24521da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE) { 24531da177e4SLinus Torvalds volatile unsigned tsr4, tsr0; 24541da177e4SLinus Torvalds int timeout; 24551da177e4SLinus Torvalds 24561da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x\n", cid); 24571da177e4SLinus Torvalds 24581da177e4SLinus Torvalds /* 2.1.2 24591da177e4SLinus Torvalds * 24601da177e4SLinus Torvalds * ... the host must first stop queueing packets to the TPDRQ 24611da177e4SLinus Torvalds * on the connection to be closed, then wait for all outstanding 24621da177e4SLinus Torvalds * packets to be transmitted and their buffers returned to the 24631da177e4SLinus Torvalds * TBRQ. When the last packet on the connection arrives in the 24641da177e4SLinus Torvalds * TBRQ, the host issues the close command to the adapter. 24651da177e4SLinus Torvalds */ 24661da177e4SLinus Torvalds 24671da177e4SLinus Torvalds while (((tx_inuse = atomic_read(&sk_atm(vcc)->sk_wmem_alloc)) > 0) && 24681da177e4SLinus Torvalds (retry < MAX_RETRY)) { 24691da177e4SLinus Torvalds msleep(sleep); 24701da177e4SLinus Torvalds if (sleep < 250) 24711da177e4SLinus Torvalds sleep = sleep * 2; 24721da177e4SLinus Torvalds 24731da177e4SLinus Torvalds ++retry; 24741da177e4SLinus Torvalds } 24751da177e4SLinus Torvalds 24761da177e4SLinus Torvalds if (tx_inuse) 24771da177e4SLinus Torvalds hprintk("close tx cid 0x%x tx_inuse = %d\n", cid, tx_inuse); 24781da177e4SLinus Torvalds 24791da177e4SLinus Torvalds /* 2.3.1.1 generic close operations with flush */ 24801da177e4SLinus Torvalds 24811da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 24821da177e4SLinus Torvalds he_writel_tsr4_upper(he_dev, TSR4_FLUSH_CONN, cid); 24831da177e4SLinus Torvalds /* also clears TSR4_SESSION_ENDED */ 24841da177e4SLinus Torvalds 24851da177e4SLinus Torvalds switch (vcc->qos.txtp.traffic_class) { 24861da177e4SLinus Torvalds case ATM_UBR: 24871da177e4SLinus Torvalds he_writel_tsr1(he_dev, 24881da177e4SLinus Torvalds TSR1_MCR(rate_to_atmf(200000)) 24891da177e4SLinus Torvalds | TSR1_PCR(0), cid); 24901da177e4SLinus Torvalds break; 24911da177e4SLinus Torvalds case ATM_CBR: 24921da177e4SLinus Torvalds he_writel_tsr14_upper(he_dev, TSR14_DELETE, cid); 24931da177e4SLinus Torvalds break; 24941da177e4SLinus Torvalds } 24951da177e4SLinus Torvalds (void) he_readl_tsr4(he_dev, cid); /* flush posted writes */ 24961da177e4SLinus Torvalds 24971da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 24981da177e4SLinus Torvalds if (tpd == NULL) { 24991da177e4SLinus Torvalds hprintk("close tx he_alloc_tpd failed cid 0x%x\n", cid); 25001da177e4SLinus Torvalds goto close_tx_incomplete; 25011da177e4SLinus Torvalds } 25021da177e4SLinus Torvalds tpd->status |= TPD_EOS | TPD_INT; 25031da177e4SLinus Torvalds tpd->skb = NULL; 25041da177e4SLinus Torvalds tpd->vcc = vcc; 25051da177e4SLinus Torvalds wmb(); 25061da177e4SLinus Torvalds 25071da177e4SLinus Torvalds set_current_state(TASK_UNINTERRUPTIBLE); 25081da177e4SLinus Torvalds add_wait_queue(&he_vcc->tx_waitq, &wait); 25091da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 25101da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 25111da177e4SLinus Torvalds 25121da177e4SLinus Torvalds timeout = schedule_timeout(30*HZ); 25131da177e4SLinus Torvalds 25141da177e4SLinus Torvalds remove_wait_queue(&he_vcc->tx_waitq, &wait); 25151da177e4SLinus Torvalds set_current_state(TASK_RUNNING); 25161da177e4SLinus Torvalds 25171da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 25181da177e4SLinus Torvalds 25191da177e4SLinus Torvalds if (timeout == 0) { 25201da177e4SLinus Torvalds hprintk("close tx timeout cid 0x%x\n", cid); 25211da177e4SLinus Torvalds goto close_tx_incomplete; 25221da177e4SLinus Torvalds } 25231da177e4SLinus Torvalds 25241da177e4SLinus Torvalds while (!((tsr4 = he_readl_tsr4(he_dev, cid)) & TSR4_SESSION_ENDED)) { 25251da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x !TSR4_SESSION_ENDED (tsr4 = 0x%x)\n", cid, tsr4); 25261da177e4SLinus Torvalds udelay(250); 25271da177e4SLinus Torvalds } 25281da177e4SLinus Torvalds 25291da177e4SLinus Torvalds while (TSR0_CONN_STATE(tsr0 = he_readl_tsr0(he_dev, cid)) != 0) { 25301da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x TSR0_CONN_STATE != 0 (tsr0 = 0x%x)\n", cid, tsr0); 25311da177e4SLinus Torvalds udelay(250); 25321da177e4SLinus Torvalds } 25331da177e4SLinus Torvalds 25341da177e4SLinus Torvalds close_tx_incomplete: 25351da177e4SLinus Torvalds 25361da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class == ATM_CBR) { 25371da177e4SLinus Torvalds int reg = he_vcc->rc_index; 25381da177e4SLinus Torvalds 25391da177e4SLinus Torvalds HPRINTK("cs_stper reg = %d\n", reg); 25401da177e4SLinus Torvalds 25411da177e4SLinus Torvalds if (he_dev->cs_stper[reg].inuse == 0) 25421da177e4SLinus Torvalds hprintk("cs_stper[%d].inuse = 0!\n", reg); 25431da177e4SLinus Torvalds else 25441da177e4SLinus Torvalds --he_dev->cs_stper[reg].inuse; 25451da177e4SLinus Torvalds 25461da177e4SLinus Torvalds he_dev->total_bw -= he_dev->cs_stper[reg].pcr; 25471da177e4SLinus Torvalds } 25481da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 25491da177e4SLinus Torvalds 25501da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x complete\n", cid); 25511da177e4SLinus Torvalds } 25521da177e4SLinus Torvalds 25531da177e4SLinus Torvalds kfree(he_vcc); 25541da177e4SLinus Torvalds 25551da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 25561da177e4SLinus Torvalds } 25571da177e4SLinus Torvalds 25581da177e4SLinus Torvalds static int 25591da177e4SLinus Torvalds he_send(struct atm_vcc *vcc, struct sk_buff *skb) 25601da177e4SLinus Torvalds { 25611da177e4SLinus Torvalds unsigned long flags; 25621da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 25631da177e4SLinus Torvalds unsigned cid = he_mkcid(he_dev, vcc->vpi, vcc->vci); 25641da177e4SLinus Torvalds struct he_tpd *tpd; 25651da177e4SLinus Torvalds #ifdef USE_SCATTERGATHER 25661da177e4SLinus Torvalds int i, slot = 0; 25671da177e4SLinus Torvalds #endif 25681da177e4SLinus Torvalds 25691da177e4SLinus Torvalds #define HE_TPD_BUFSIZE 0xffff 25701da177e4SLinus Torvalds 25711da177e4SLinus Torvalds HPRINTK("send %d.%d\n", vcc->vpi, vcc->vci); 25721da177e4SLinus Torvalds 25731da177e4SLinus Torvalds if ((skb->len > HE_TPD_BUFSIZE) || 25741da177e4SLinus Torvalds ((vcc->qos.aal == ATM_AAL0) && (skb->len != ATM_AAL0_SDU))) { 25751da177e4SLinus Torvalds hprintk("buffer too large (or small) -- %d bytes\n", skb->len ); 25761da177e4SLinus Torvalds if (vcc->pop) 25771da177e4SLinus Torvalds vcc->pop(vcc, skb); 25781da177e4SLinus Torvalds else 25791da177e4SLinus Torvalds dev_kfree_skb_any(skb); 25801da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 25811da177e4SLinus Torvalds return -EINVAL; 25821da177e4SLinus Torvalds } 25831da177e4SLinus Torvalds 25841da177e4SLinus Torvalds #ifndef USE_SCATTERGATHER 25851da177e4SLinus Torvalds if (skb_shinfo(skb)->nr_frags) { 25861da177e4SLinus Torvalds hprintk("no scatter/gather support\n"); 25871da177e4SLinus Torvalds if (vcc->pop) 25881da177e4SLinus Torvalds vcc->pop(vcc, skb); 25891da177e4SLinus Torvalds else 25901da177e4SLinus Torvalds dev_kfree_skb_any(skb); 25911da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 25921da177e4SLinus Torvalds return -EINVAL; 25931da177e4SLinus Torvalds } 25941da177e4SLinus Torvalds #endif 25951da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 25961da177e4SLinus Torvalds 25971da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 25981da177e4SLinus Torvalds if (tpd == NULL) { 25991da177e4SLinus Torvalds if (vcc->pop) 26001da177e4SLinus Torvalds vcc->pop(vcc, skb); 26011da177e4SLinus Torvalds else 26021da177e4SLinus Torvalds dev_kfree_skb_any(skb); 26031da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 26041da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 26051da177e4SLinus Torvalds return -ENOMEM; 26061da177e4SLinus Torvalds } 26071da177e4SLinus Torvalds 26081da177e4SLinus Torvalds if (vcc->qos.aal == ATM_AAL5) 26091da177e4SLinus Torvalds tpd->status |= TPD_CELLTYPE(TPD_USERCELL); 26101da177e4SLinus Torvalds else { 26111da177e4SLinus Torvalds char *pti_clp = (void *) (skb->data + 3); 26121da177e4SLinus Torvalds int clp, pti; 26131da177e4SLinus Torvalds 26141da177e4SLinus Torvalds pti = (*pti_clp & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT; 26151da177e4SLinus Torvalds clp = (*pti_clp & ATM_HDR_CLP); 26161da177e4SLinus Torvalds tpd->status |= TPD_CELLTYPE(pti); 26171da177e4SLinus Torvalds if (clp) 26181da177e4SLinus Torvalds tpd->status |= TPD_CLP; 26191da177e4SLinus Torvalds 26201da177e4SLinus Torvalds skb_pull(skb, ATM_AAL0_SDU - ATM_CELL_PAYLOAD); 26211da177e4SLinus Torvalds } 26221da177e4SLinus Torvalds 26231da177e4SLinus Torvalds #ifdef USE_SCATTERGATHER 26241da177e4SLinus Torvalds tpd->iovec[slot].addr = pci_map_single(he_dev->pci_dev, skb->data, 26251da177e4SLinus Torvalds skb->len - skb->data_len, PCI_DMA_TODEVICE); 26261da177e4SLinus Torvalds tpd->iovec[slot].len = skb->len - skb->data_len; 26271da177e4SLinus Torvalds ++slot; 26281da177e4SLinus Torvalds 26291da177e4SLinus Torvalds for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 26301da177e4SLinus Torvalds skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; 26311da177e4SLinus Torvalds 26321da177e4SLinus Torvalds if (slot == TPD_MAXIOV) { /* queue tpd; start new tpd */ 26331da177e4SLinus Torvalds tpd->vcc = vcc; 26341da177e4SLinus Torvalds tpd->skb = NULL; /* not the last fragment 26351da177e4SLinus Torvalds so dont ->push() yet */ 26361da177e4SLinus Torvalds wmb(); 26371da177e4SLinus Torvalds 26381da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 26391da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 26401da177e4SLinus Torvalds if (tpd == NULL) { 26411da177e4SLinus Torvalds if (vcc->pop) 26421da177e4SLinus Torvalds vcc->pop(vcc, skb); 26431da177e4SLinus Torvalds else 26441da177e4SLinus Torvalds dev_kfree_skb_any(skb); 26451da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 26461da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 26471da177e4SLinus Torvalds return -ENOMEM; 26481da177e4SLinus Torvalds } 26491da177e4SLinus Torvalds tpd->status |= TPD_USERCELL; 26501da177e4SLinus Torvalds slot = 0; 26511da177e4SLinus Torvalds } 26521da177e4SLinus Torvalds 26531da177e4SLinus Torvalds tpd->iovec[slot].addr = pci_map_single(he_dev->pci_dev, 26541da177e4SLinus Torvalds (void *) page_address(frag->page) + frag->page_offset, 26551da177e4SLinus Torvalds frag->size, PCI_DMA_TODEVICE); 26561da177e4SLinus Torvalds tpd->iovec[slot].len = frag->size; 26571da177e4SLinus Torvalds ++slot; 26581da177e4SLinus Torvalds 26591da177e4SLinus Torvalds } 26601da177e4SLinus Torvalds 26611da177e4SLinus Torvalds tpd->iovec[slot - 1].len |= TPD_LST; 26621da177e4SLinus Torvalds #else 26631da177e4SLinus Torvalds tpd->address0 = pci_map_single(he_dev->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE); 26641da177e4SLinus Torvalds tpd->length0 = skb->len | TPD_LST; 26651da177e4SLinus Torvalds #endif 26661da177e4SLinus Torvalds tpd->status |= TPD_INT; 26671da177e4SLinus Torvalds 26681da177e4SLinus Torvalds tpd->vcc = vcc; 26691da177e4SLinus Torvalds tpd->skb = skb; 26701da177e4SLinus Torvalds wmb(); 26711da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 26721da177e4SLinus Torvalds 26731da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 26741da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 26751da177e4SLinus Torvalds 26761da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx); 26771da177e4SLinus Torvalds 26781da177e4SLinus Torvalds return 0; 26791da177e4SLinus Torvalds } 26801da177e4SLinus Torvalds 26811da177e4SLinus Torvalds static int 26821da177e4SLinus Torvalds he_ioctl(struct atm_dev *atm_dev, unsigned int cmd, void __user *arg) 26831da177e4SLinus Torvalds { 26841da177e4SLinus Torvalds unsigned long flags; 26851da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 26861da177e4SLinus Torvalds struct he_ioctl_reg reg; 26871da177e4SLinus Torvalds int err = 0; 26881da177e4SLinus Torvalds 26891da177e4SLinus Torvalds switch (cmd) { 26901da177e4SLinus Torvalds case HE_GET_REG: 26911da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 26921da177e4SLinus Torvalds return -EPERM; 26931da177e4SLinus Torvalds 26941da177e4SLinus Torvalds if (copy_from_user(®, arg, 26951da177e4SLinus Torvalds sizeof(struct he_ioctl_reg))) 26961da177e4SLinus Torvalds return -EFAULT; 26971da177e4SLinus Torvalds 26981da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 26991da177e4SLinus Torvalds switch (reg.type) { 27001da177e4SLinus Torvalds case HE_REGTYPE_PCI: 270128e84ab3SRobert T. Johnson if (reg.addr < 0 || reg.addr >= HE_REGMAP_SIZE) { 270228e84ab3SRobert T. Johnson err = -EINVAL; 270328e84ab3SRobert T. Johnson break; 270428e84ab3SRobert T. Johnson } 270528e84ab3SRobert T. Johnson 27061da177e4SLinus Torvalds reg.val = he_readl(he_dev, reg.addr); 27071da177e4SLinus Torvalds break; 27081da177e4SLinus Torvalds case HE_REGTYPE_RCM: 27091da177e4SLinus Torvalds reg.val = 27101da177e4SLinus Torvalds he_readl_rcm(he_dev, reg.addr); 27111da177e4SLinus Torvalds break; 27121da177e4SLinus Torvalds case HE_REGTYPE_TCM: 27131da177e4SLinus Torvalds reg.val = 27141da177e4SLinus Torvalds he_readl_tcm(he_dev, reg.addr); 27151da177e4SLinus Torvalds break; 27161da177e4SLinus Torvalds case HE_REGTYPE_MBOX: 27171da177e4SLinus Torvalds reg.val = 27181da177e4SLinus Torvalds he_readl_mbox(he_dev, reg.addr); 27191da177e4SLinus Torvalds break; 27201da177e4SLinus Torvalds default: 27211da177e4SLinus Torvalds err = -EINVAL; 27221da177e4SLinus Torvalds break; 27231da177e4SLinus Torvalds } 27241da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27251da177e4SLinus Torvalds if (err == 0) 27261da177e4SLinus Torvalds if (copy_to_user(arg, ®, 27271da177e4SLinus Torvalds sizeof(struct he_ioctl_reg))) 27281da177e4SLinus Torvalds return -EFAULT; 27291da177e4SLinus Torvalds break; 27301da177e4SLinus Torvalds default: 27311da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 27321da177e4SLinus Torvalds if (atm_dev->phy && atm_dev->phy->ioctl) 27331da177e4SLinus Torvalds err = atm_dev->phy->ioctl(atm_dev, cmd, arg); 27341da177e4SLinus Torvalds #else /* CONFIG_ATM_HE_USE_SUNI */ 27351da177e4SLinus Torvalds err = -EINVAL; 27361da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 27371da177e4SLinus Torvalds break; 27381da177e4SLinus Torvalds } 27391da177e4SLinus Torvalds 27401da177e4SLinus Torvalds return err; 27411da177e4SLinus Torvalds } 27421da177e4SLinus Torvalds 27431da177e4SLinus Torvalds static void 27441da177e4SLinus Torvalds he_phy_put(struct atm_dev *atm_dev, unsigned char val, unsigned long addr) 27451da177e4SLinus Torvalds { 27461da177e4SLinus Torvalds unsigned long flags; 27471da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 27481da177e4SLinus Torvalds 27491da177e4SLinus Torvalds HPRINTK("phy_put(val 0x%x, addr 0x%lx)\n", val, addr); 27501da177e4SLinus Torvalds 27511da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 27521da177e4SLinus Torvalds he_writel(he_dev, val, FRAMER + (addr*4)); 27531da177e4SLinus Torvalds (void) he_readl(he_dev, FRAMER + (addr*4)); /* flush posted writes */ 27541da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27551da177e4SLinus Torvalds } 27561da177e4SLinus Torvalds 27571da177e4SLinus Torvalds 27581da177e4SLinus Torvalds static unsigned char 27591da177e4SLinus Torvalds he_phy_get(struct atm_dev *atm_dev, unsigned long addr) 27601da177e4SLinus Torvalds { 27611da177e4SLinus Torvalds unsigned long flags; 27621da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 27631da177e4SLinus Torvalds unsigned reg; 27641da177e4SLinus Torvalds 27651da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 27661da177e4SLinus Torvalds reg = he_readl(he_dev, FRAMER + (addr*4)); 27671da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27681da177e4SLinus Torvalds 27691da177e4SLinus Torvalds HPRINTK("phy_get(addr 0x%lx) =0x%x\n", addr, reg); 27701da177e4SLinus Torvalds return reg; 27711da177e4SLinus Torvalds } 27721da177e4SLinus Torvalds 27731da177e4SLinus Torvalds static int 27741da177e4SLinus Torvalds he_proc_read(struct atm_dev *dev, loff_t *pos, char *page) 27751da177e4SLinus Torvalds { 27761da177e4SLinus Torvalds unsigned long flags; 27771da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(dev); 27781da177e4SLinus Torvalds int left, i; 27791da177e4SLinus Torvalds #ifdef notdef 27801da177e4SLinus Torvalds struct he_rbrq *rbrq_tail; 27811da177e4SLinus Torvalds struct he_tpdrq *tpdrq_head; 27821da177e4SLinus Torvalds int rbpl_head, rbpl_tail; 27831da177e4SLinus Torvalds #endif 27841da177e4SLinus Torvalds static long mcc = 0, oec = 0, dcc = 0, cec = 0; 27851da177e4SLinus Torvalds 27861da177e4SLinus Torvalds 27871da177e4SLinus Torvalds left = *pos; 27881da177e4SLinus Torvalds if (!left--) 2789900092a4SAdrian Bunk return sprintf(page, "ATM he driver\n"); 27901da177e4SLinus Torvalds 27911da177e4SLinus Torvalds if (!left--) 27921da177e4SLinus Torvalds return sprintf(page, "%s%s\n\n", 27931da177e4SLinus Torvalds he_dev->prod_id, he_dev->media & 0x40 ? "SM" : "MM"); 27941da177e4SLinus Torvalds 27951da177e4SLinus Torvalds if (!left--) 27961da177e4SLinus Torvalds return sprintf(page, "Mismatched Cells VPI/VCI Not Open Dropped Cells RCM Dropped Cells\n"); 27971da177e4SLinus Torvalds 27981da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 27991da177e4SLinus Torvalds mcc += he_readl(he_dev, MCC); 28001da177e4SLinus Torvalds oec += he_readl(he_dev, OEC); 28011da177e4SLinus Torvalds dcc += he_readl(he_dev, DCC); 28021da177e4SLinus Torvalds cec += he_readl(he_dev, CEC); 28031da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 28041da177e4SLinus Torvalds 28051da177e4SLinus Torvalds if (!left--) 28061da177e4SLinus Torvalds return sprintf(page, "%16ld %16ld %13ld %17ld\n\n", 28071da177e4SLinus Torvalds mcc, oec, dcc, cec); 28081da177e4SLinus Torvalds 28091da177e4SLinus Torvalds if (!left--) 28101da177e4SLinus Torvalds return sprintf(page, "irq_size = %d inuse = ? peak = %d\n", 28111da177e4SLinus Torvalds CONFIG_IRQ_SIZE, he_dev->irq_peak); 28121da177e4SLinus Torvalds 28131da177e4SLinus Torvalds if (!left--) 28141da177e4SLinus Torvalds return sprintf(page, "tpdrq_size = %d inuse = ?\n", 28151da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE); 28161da177e4SLinus Torvalds 28171da177e4SLinus Torvalds if (!left--) 28181da177e4SLinus Torvalds return sprintf(page, "rbrq_size = %d inuse = ? peak = %d\n", 28191da177e4SLinus Torvalds CONFIG_RBRQ_SIZE, he_dev->rbrq_peak); 28201da177e4SLinus Torvalds 28211da177e4SLinus Torvalds if (!left--) 28221da177e4SLinus Torvalds return sprintf(page, "tbrq_size = %d peak = %d\n", 28231da177e4SLinus Torvalds CONFIG_TBRQ_SIZE, he_dev->tbrq_peak); 28241da177e4SLinus Torvalds 28251da177e4SLinus Torvalds 28261da177e4SLinus Torvalds #ifdef notdef 28271da177e4SLinus Torvalds rbpl_head = RBPL_MASK(he_readl(he_dev, G0_RBPL_S)); 28281da177e4SLinus Torvalds rbpl_tail = RBPL_MASK(he_readl(he_dev, G0_RBPL_T)); 28291da177e4SLinus Torvalds 28301da177e4SLinus Torvalds inuse = rbpl_head - rbpl_tail; 28311da177e4SLinus Torvalds if (inuse < 0) 28321da177e4SLinus Torvalds inuse += CONFIG_RBPL_SIZE * sizeof(struct he_rbp); 28331da177e4SLinus Torvalds inuse /= sizeof(struct he_rbp); 28341da177e4SLinus Torvalds 28351da177e4SLinus Torvalds if (!left--) 28361da177e4SLinus Torvalds return sprintf(page, "rbpl_size = %d inuse = %d\n\n", 28371da177e4SLinus Torvalds CONFIG_RBPL_SIZE, inuse); 28381da177e4SLinus Torvalds #endif 28391da177e4SLinus Torvalds 28401da177e4SLinus Torvalds if (!left--) 28411da177e4SLinus Torvalds return sprintf(page, "rate controller periods (cbr)\n pcr #vc\n"); 28421da177e4SLinus Torvalds 28431da177e4SLinus Torvalds for (i = 0; i < HE_NUM_CS_STPER; ++i) 28441da177e4SLinus Torvalds if (!left--) 28451da177e4SLinus Torvalds return sprintf(page, "cs_stper%-2d %8ld %3d\n", i, 28461da177e4SLinus Torvalds he_dev->cs_stper[i].pcr, 28471da177e4SLinus Torvalds he_dev->cs_stper[i].inuse); 28481da177e4SLinus Torvalds 28491da177e4SLinus Torvalds if (!left--) 28501da177e4SLinus Torvalds return sprintf(page, "total bw (cbr): %d (limit %d)\n", 28511da177e4SLinus Torvalds he_dev->total_bw, he_dev->atm_dev->link_rate * 10 / 9); 28521da177e4SLinus Torvalds 28531da177e4SLinus Torvalds return 0; 28541da177e4SLinus Torvalds } 28551da177e4SLinus Torvalds 28561da177e4SLinus Torvalds /* eeprom routines -- see 4.7 */ 28571da177e4SLinus Torvalds 28580ee897d4SAdrian Bunk static u8 read_prom_byte(struct he_dev *he_dev, int addr) 28591da177e4SLinus Torvalds { 28601da177e4SLinus Torvalds u32 val = 0, tmp_read = 0; 28611da177e4SLinus Torvalds int i, j = 0; 28621da177e4SLinus Torvalds u8 byte_read = 0; 28631da177e4SLinus Torvalds 28641da177e4SLinus Torvalds val = readl(he_dev->membase + HOST_CNTL); 28651da177e4SLinus Torvalds val &= 0xFFFFE0FF; 28661da177e4SLinus Torvalds 28671da177e4SLinus Torvalds /* Turn on write enable */ 28681da177e4SLinus Torvalds val |= 0x800; 28691da177e4SLinus Torvalds he_writel(he_dev, val, HOST_CNTL); 28701da177e4SLinus Torvalds 28711da177e4SLinus Torvalds /* Send READ instruction */ 287236fe55d6SAhmed S. Darwish for (i = 0; i < ARRAY_SIZE(readtab); i++) { 28731da177e4SLinus Torvalds he_writel(he_dev, val | readtab[i], HOST_CNTL); 28741da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28751da177e4SLinus Torvalds } 28761da177e4SLinus Torvalds 28771da177e4SLinus Torvalds /* Next, we need to send the byte address to read from */ 28781da177e4SLinus Torvalds for (i = 7; i >= 0; i--) { 28791da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL); 28801da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28811da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL); 28821da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28831da177e4SLinus Torvalds } 28841da177e4SLinus Torvalds 28851da177e4SLinus Torvalds j = 0; 28861da177e4SLinus Torvalds 28871da177e4SLinus Torvalds val &= 0xFFFFF7FF; /* Turn off write enable */ 28881da177e4SLinus Torvalds he_writel(he_dev, val, HOST_CNTL); 28891da177e4SLinus Torvalds 28901da177e4SLinus Torvalds /* Now, we can read data from the EEPROM by clocking it in */ 28911da177e4SLinus Torvalds for (i = 7; i >= 0; i--) { 28921da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++], HOST_CNTL); 28931da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28941da177e4SLinus Torvalds tmp_read = he_readl(he_dev, HOST_CNTL); 28951da177e4SLinus Torvalds byte_read |= (unsigned char) 28961da177e4SLinus Torvalds ((tmp_read & ID_DOUT) >> ID_DOFFSET << i); 28971da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++], HOST_CNTL); 28981da177e4SLinus Torvalds udelay(EEPROM_DELAY); 28991da177e4SLinus Torvalds } 29001da177e4SLinus Torvalds 29011da177e4SLinus Torvalds he_writel(he_dev, val | ID_CS, HOST_CNTL); 29021da177e4SLinus Torvalds udelay(EEPROM_DELAY); 29031da177e4SLinus Torvalds 29041da177e4SLinus Torvalds return byte_read; 29051da177e4SLinus Torvalds } 29061da177e4SLinus Torvalds 29071da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 29081da177e4SLinus Torvalds MODULE_AUTHOR("chas williams <chas@cmf.nrl.navy.mil>"); 29091da177e4SLinus Torvalds MODULE_DESCRIPTION("ForeRunnerHE ATM Adapter driver"); 29101da177e4SLinus Torvalds module_param(disable64, bool, 0); 29111da177e4SLinus Torvalds MODULE_PARM_DESC(disable64, "disable 64-bit pci bus transfers"); 29121da177e4SLinus Torvalds module_param(nvpibits, short, 0); 29131da177e4SLinus Torvalds MODULE_PARM_DESC(nvpibits, "numbers of bits for vpi (default 0)"); 29141da177e4SLinus Torvalds module_param(nvcibits, short, 0); 29151da177e4SLinus Torvalds MODULE_PARM_DESC(nvcibits, "numbers of bits for vci (default 12)"); 29161da177e4SLinus Torvalds module_param(rx_skb_reserve, short, 0); 29171da177e4SLinus Torvalds MODULE_PARM_DESC(rx_skb_reserve, "padding for receive skb (default 16)"); 29181da177e4SLinus Torvalds module_param(irq_coalesce, bool, 0); 29191da177e4SLinus Torvalds MODULE_PARM_DESC(irq_coalesce, "use interrupt coalescing (default 1)"); 29201da177e4SLinus Torvalds module_param(sdh, bool, 0); 29211da177e4SLinus Torvalds MODULE_PARM_DESC(sdh, "use SDH framing (default 0)"); 29221da177e4SLinus Torvalds 29231da177e4SLinus Torvalds static struct pci_device_id he_pci_tbl[] = { 29241da177e4SLinus Torvalds { PCI_VENDOR_ID_FORE, PCI_DEVICE_ID_FORE_HE, PCI_ANY_ID, PCI_ANY_ID, 29251da177e4SLinus Torvalds 0, 0, 0 }, 29261da177e4SLinus Torvalds { 0, } 29271da177e4SLinus Torvalds }; 29281da177e4SLinus Torvalds 29291da177e4SLinus Torvalds MODULE_DEVICE_TABLE(pci, he_pci_tbl); 29301da177e4SLinus Torvalds 29311da177e4SLinus Torvalds static struct pci_driver he_driver = { 29321da177e4SLinus Torvalds .name = "he", 29331da177e4SLinus Torvalds .probe = he_init_one, 29341da177e4SLinus Torvalds .remove = __devexit_p(he_remove_one), 29351da177e4SLinus Torvalds .id_table = he_pci_tbl, 29361da177e4SLinus Torvalds }; 29371da177e4SLinus Torvalds 29381da177e4SLinus Torvalds static int __init he_init(void) 29391da177e4SLinus Torvalds { 29401da177e4SLinus Torvalds return pci_register_driver(&he_driver); 29411da177e4SLinus Torvalds } 29421da177e4SLinus Torvalds 29431da177e4SLinus Torvalds static void __exit he_cleanup(void) 29441da177e4SLinus Torvalds { 29451da177e4SLinus Torvalds pci_unregister_driver(&he_driver); 29461da177e4SLinus Torvalds } 29471da177e4SLinus Torvalds 29481da177e4SLinus Torvalds module_init(he_init); 29491da177e4SLinus Torvalds module_exit(he_cleanup); 2950